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Eulimnadia palustera Timms 2015
No full textSynonymy of <i>E. palustera</i> <p> This species was originally assigned to <i>Eulimnadia</i> on the sole criterion of an apparent spine beneath the cercopod base (Timms, 2015). However, this spine is not a typical subcercopod spine of most <i>Eulimnadia</i> but a rather sharp triangular ventroposterior corner of the telson. Hence, an assignment to <i>Paralimnadia</i> is necessary. Furthermore, three other features suggest placement in <i>Paralimnadia</i>: a cercopod with a spine approximately midlength and not at about 80% of its length, 13 antennomeres rather than about 8, and a sex ratio approximating 1:1, all generally (but not absolutely) indicating <i>Paralimnadia</i> (Timms, 2016a, 2016b).</p> <p> Given the placement of <i>P. palustera</i> within <i>Paralimnadia</i>, its eggs are identical with those of <i>P. rivolensis</i> being astroform with 14–20 projections subtended by 3–8 sharp-edged grooves (fig. 4). Egg morphology has proved to be the most reliable character separating species within <i>Eulimnadia</i> (Belk, 1998; Rabet, 2010; Rogers et al., 2012; Timms, 2016a) and <i>Paralimnadia</i> (Timms, 2016b). The next most reliable species indicator in both genera is the nature of the cercopod setae. Both <i>P. palustera</i> and <i>P. rivolensis</i> have about 8 medium length (i.e. 1–2× cercopod diameter) setae (cf. fig. 6 in Timms, 2015 and figs 1–3). Again, both species have about 21 telsonic spines, although spacing is different in the two species. In <i>P. rivolensis</i>, all are evenly sized and spaced, except for the first three, which are larger and more spaced. In <i>P. palustera</i>, the telsonic spines are mixed in size (cf. fig 6 in Timms 2015 and figs 1–3). Two characters generally of poor differentiating ability are the first antennae and rostrum, although in these two species, there are only minor differences (cf. fig 6 in Timms and figs 1–3).</p> <p> The claspers are somewhat different between the two species. <i>P. palustera</i> has a distinct hamulus medially on the hand (endite IV), while <i>P. rivolensis</i> has just a slight swelling there. The palps are variable, with 3 palpomeres in the paralectotype of <i>P. rivolensis</i>, but only 2 indistinct ones in most other specimens examined. <i>P. palustera</i> generally has 3 palpomeres but may have the second division indistinct or incomplete. Sometimes there are spines at palpomere junction 1–2 in <i>P. rivolensis.</i> Similar variability has sometimes been observed in a few other <i>Paralimnadia</i> species (Timms 2016b).</p> <p> <i>Distribution.</i> South-western Western Australia, south-eastern South Australia, southern Victoria and Tasmania. There is a single record from central Australia, which is difficult to accept considering the prominent maritime distribution across southern Australia. It has not been collected in Victoria since 1910, its habitat in the swamps of eastern Port Philip Bay being drained and urbanised in the early 1900s. Widespread drainage in the south-east of South Australia seems to have denied it habitat there. The most recent collection from near the type locality is dated 1975, and my expeditions there in the spring of 2010 and winter of 2016 were unsuccessful. Sites in central Tasmania seem (as of March 2018) also to be drained, so that perhaps it now only occurs in refuges of Flinders Island, Kangaroo Island and south-western Western Australia.</p>Published as part of <i>Timms, Brian V., 2019, A redescription of Eulimnadia rivolensis (Brady, 1886) (Branchiopoda: Spinicaudata: Limnadiiidae), and its transfer to Paralimnadia, pp. 57-64 in Memoirs of Museum Victoria 78</i> on page 63, DOI: 10.24199/j.mmv.2019.78.03, <a href="http://zenodo.org/record/8065279">http://zenodo.org/record/8065279</a>
Parartemia purpurea Timms, 2010, sp. nov.
No full textParartemia purpurea sp. nov. (Figs 4,7,11) Parartemia n sp a Timms and Savage, 2004, p 22, 28; Timms 2009. Etymology. This species is named for the distinct purple colouration of mature females, the name being derived from the Latin purpurea meaning purple. Holotype. One male, 44 km NNE of Esperance, unnamed lake on Dempster Rd, (33 o 28 ’ 58 ”S, 122 o 00’ 38 ”E), 8 October 2008; BVT, WAM 45235. Allotype. One female, same collecting data as holotype, WAM 45236. Paratypes. Two males, two females, some collecting data as holotype, WAM 45237; two males, two females, same collecting data as holotype, AM 82976. Other material. 10 males, 10 females, 23.5 km E of Scaddan, unnamed lake on East Lignite Rd, (33 o 19 ’ 28 ”S, 121 o 58 ’ 17 ”E), 2 August 2005, BVT, WAM 45238; 10 females, 38 km N of Esperance, unnamed lake on south side of Speddingup Rd, (33 o 31 ’ 01”S, 121 o 52 ’ 21 ”E), 8 October 2008, BVT, WAM 45239; 10 males, 10 females, all immature, 64.5 km NE of Esperance near Kau Rock, unnamed pond, (33 o 24 ’ 32 ”S, 122 o 20 ’ 00”E), 9 October 2008, BVT, WAM 45240; 10 males, 10 females, 80 km NE of Esperance in Beaumont Nature Reserve, unnamed lake, (33 o 27 ’ 37 ”S, 122 o 36 ’ 43 ”E), 5 September 2004, BVT, WAM 45241. Description. Male. Length 21.5 mm (head plus thorax 7 mm, abdomen 14.5 mm) First antenna (Fig. 11 A) filiform, a little longer than eye plus peduncle. Second antenna. Basal antennomeres (Fig. 11 A) fused at about 75 o to body axis. Ventral margin with paired ventral processes (Fig. 11 A) about 3 times longer than deep, with distoventral corner rounded but not protruding and medioventral corner sharp, almost a right angle. Ventral process margin with well spaced minute spines, also a few such spines on dorsal surface of the processes. Medial margin of ventral processes about 1.2 times longer than lateral margin. Medial space between ventral processes narrow with parallel margins and terminating basally in a short notch. Ventrolaterally just lateral to basodistal margin of the ventral process a raised circular area, the conical mound, with numerous minute spines. Anterior processes (Fig. 11 A) small, blunt triangular, about one quarter depth of ventral processes. Distal antennomere (Fig. 11 A) almost twice as long as basal antennomere, curved medially, cylindrical and tapering to a sharp apex. Labrum lacking a spine. Thoracomeres (Fig 10 B) enveloped laterally in small fused lobes to form a narrow lateral flange along whole length of thorax. Thorax widest at thoracomeres 10 to 11, with lobe on first genital as wide as lobe on T 11 anteriorly, but markedly narrowing posteriorly. No lobe on second genital segment. Eleven pairs of thoracopods, with first two reduced in size and last without an epipodite. Fifth thoracopod typical for the genus. Gonopods (Fig. 11 C) fused basally. Each apical free portion with a short hooked digitiform process inserted ventrolaterally at about three quarters the length of the free portion. No basal spine. A paratype with gonopod everted (Fig. 11 D)— everted part a little longer than free basal portion, consisting of a basal wide cylindrical component and a tubular distal part of two diameters, a middle section narrower than basal tube and an apical, very narrow apical section. Whole expanded section naked except for a two recurved spines on a single base posteriolaterally on the wide cylindrical component. Abdomen long, 2.1 times head plus thorax. Segments increasing in length and but hardy decreasing in diameter sequentially 1 to 6, with sixth 2.2 times the length and but only marginally narrower than first segment. Telson inflated and not clearly demarked from sixth abdominal segment and cercopods about length of fourth abdominal segment and clothed with setae medially and laterally. Female. 11 mm (head plus thorax 6.7 mm, abdomen 4.3 mm). In life, mature females coloured a deep purple, with the brood chambers a lesser intense colour. Head (Fig. 11 E) with first antenna filiform and slightly shorter than length of eye plus peduncle. Second antenna a little longer than twice eye plus peduncle length, somewhat flattened, and narrowing evenly to a sharp apex. Labrum with a prominent recurved spine. Thoracomeres (Fig. 11 F,G) 1 – 6 and 8 normal, thoracomere 7 with a lateral tumidity, thoracomeres 9 and 10 each with a dorsolateral lamella, with a sclerotized and denticulate margin. Dorsolateral lamella of thoracomere 9 asymmetrical, narrow dorsally and widest ventrolaterally and with subsidiary ventrolateral lamella, while lamella of segment 10 more symmetrical and more ventrolateral. Thoracomere 11 somewhat reduced. Eleven pairs of thoracopods, 2 nd and 10 th pairs a little shorter than most, 1 st about half size and 11 th reduced to just a pair of stubs bearing a few spines. First thoracopod (Fig. 7 J) with all normal components, but endopod and particularly exopod reduced, so that both have fewer posterior seate than normal and exopod just protruding beyond endopod. Normal anterior setae, and with basal anterior setae of endite 4 enlarged, longer than adjacent posterior setae. Fifth thoracopod of normal construction for Parartemia and similar to that in males. Tenth thoracopod (Fig. 7 K) with most structures reduced, particularly endites 1 + 2 and 3, endopod and praeepipodite, and with epipodite lacking. Exopodite of normal relative size and projecting well beyond the endopodite. Anterior setae of endites all present, but reduced in size. Eleventh thoracopod (Fig. 7 L) a stub with terminally what appears to be a very reduced endopod with five setae, and medially two protuberances, the distal one with two setae and a basal greater naked protuberance. These protuberances could be endites. Brood pouch (Fig. 11 F,G) lateral lobes oval structures in dorsal view but more quadrahedral laterally, and connected ventrally, with a posteriorly directed gonopore, borne on a tubular projection. Abdomen segments typical for Parartemia, i.e. segments increase in length and decrease in diameter sequentially from segments 1 to 6. Surface denticulate. Variability. Mature males vary in length from 16 to 23 mm. The basal antennomeres are fused at various angles, probably influenced by preservation, of 60–80 o to body axis and while the frontal processes seem always to be small, blunt and triangular, the ventral processes vary so that the distoventral corner may protrude a little and the medial space varies from being almost closed to being open by a distance up to about one third the depth of the ventral processes. The medial margins of the ventral processes may not always be parallel, but occasionally are V-shaped or uneven. However, the angle of near 90 o on the medioventral corner of the ventral processes varies little. The raised spinose area ventrolaterally to the basodistal margin of the ventral processes may be expressed as a conical mound or may be hardly present. The flange on the thoracic margins is generally present, but its widest part may be at thoracomere 10 or occasionally 11, i.e. more posterior than at thoracomere 8–9. Abdomen length varies from 1.25 to 2.33 times head plus thorax length (average of 1.78 in 10 specimens). This length is due in part to the relatively long 6 th segment which on average is 2.1 times length of 1 st segment. The first ratio is greater than for P. longicaudata and the second only a little less than in P. longicaudata, the species supposedly with an extraordinary long abdomen (see earlier). Mature females range in length from 9.6 to 11.2 mm, and while opaque white in preservation, in life are almost always a deep purple. The lateral tumidities on thoracomere 7 while usually prominent, are sometimes deflated and not noticeable. The lateral lamellae of thoracomere 9 and 10 vary in development, but the lamella of thoracomere 9 is always larger than that of thoracomere 10 and more dorsal in position. Differential diagnosis. P. purpurea sp. nov. males are most similar to P. zietziana due to their broadly similar ventral processes and the shape of the medial area between these processes. However P. zietziana has digitiform anterior processes compared to short conical processes in P. purpurea sp. nov. The lateral and medial margins of the ventral processes are of similar length in P. zietziana, but the medial margin is about 1.2 times longer than lateral margin in P. purpurea sp. nov. The ventrolateral area at the basodistal margin of the ventral processes is different in the two species: in P. purpurea sp. nov. it is raised and very spinous, but in P. zietziana it hardly present, if at all. Finally the abdomen is relatively longer in most specimens of P. p u r p u re a sp. nov. (1.78 times) than in P. zietziana (1.30 in 10 specimens). The two species have different distributions separated by the Nullarbor Plain – P. zietziana occurs in central lowland Tasmania, southern Victoria, and southern South Australia to as far west as the eastern Eyre Peninsula, while P.purpurea sp. nov. occurs in the Esperance hinterland area of Western Australia (Timms et al., 2009). Females are distinct from all other species due to the lack of dorsal swellings and horizontal lateral lobes on various thoracic segments, and the presence of lateral swellings on thoracomere 7 and vertical lateral flaps on thoracomere 9 and 10. Furthermore it is unusual in Parartemia females to have a vestige of thoracopod 11 as P. p u r p u re a sp. nov. does; closest species in this character is P. acidiphila with 3 terminal setae, P. laticaudata sp. nov. with two terminal spines and P. longicaudata with a subterminal spine. Distribution and ecology. P. purpurea sp. nov. occurs in alkaline saline lakes in the Esperance hinterland, from about Grass Patch-Scadden eastwards for about 90 km to Beaumont Nature Reserve (Timms et al., 2009)(Fig. 4). It occurs over a salinity range of 20 to 235 g /L and in lakes with pH varying from 6.9 to 10.4 (Timms, 2009 b; Timms et al., 2009). Generally it occurs in late winter- spring as lakes fill with winterspring rains, reproduces in September and October with purple coloured females actively swimming in the shallows and depositing eggs. Occasionally summer rains fill the lakes, in which case P. purpurea sp. nov. responds as it does to a winter filling (Timms, 2009 b). Females are easily predated upon by waders (mainly Stilts, Avocets) as they swim conspicuously in shallow waters, so that sex ratios can become very biased towards males which tend to stay in deeper waters (author, unpublished observations). Presently it is common throughout this area as few lakes are salinised.Published as part of Timms, Brian V, 2010, Six new species of the brine shrimp Parartemia Sayce 1903 (Crustacea: Anostraca: Artemiina) in Western Australia, pp. 1-35 in Zootaxa 2715 on pages 24-27, DOI: 10.5281/zenodo.19970
Lynceus baylyi TIMMS, 2013, sp.nov.
No full textLynceus baylyi sp.nov. (Figs. 4D, 6A,B,E,F, 10, 11) Etymology. This species is named for Dr Ian A. E. Bayly, limnological pioneer and an early student of gnammas (rockholes). It is particularly fitting this species should honour him as it occurs mainly in gnammas in the arid inland of Western Australia, the site of many recent expeditions by Ian in a quest to understand the early white explorers and track makers of this remote part of Australia and to study its gnammas (see Bayly 2009; Bayly et al. 2011). Type locality. Australia, Western Australia, 14.6 km NNE of Trayning, middle gnamma of five in a row, 30 o 59’ 29”S, 117 o 50’ 47”E, 20 October 2011, collector BVT. Holotype. Male deposited in the Western Australian Museum (Perth). Length 6.9 mm. Registration number WAM 51627. Allotype. Female deposited in the Western Australian Museum (Perth). Length 6.9 mm. Registration number, WAM 51628. Paratypes. 8 altogether; 2 males and 2 females deposited in Australian Museum (Sydney). Accession number, AM P89064, and 2 males and two females deposited in Western Australian Museum (Perth) WAM 51629. Other Material. South Australia: Muckera Rockhole, N of Cook, SAM C7628. Western Australia: 140 km NW of Warburton, rockhole Bakers Range, 20, June, 1979, J. Blyth, WAM 51571; gnamma 1.6 km WSW of Mt Samuel, AM P55688; Great Victoria Desert, David Carnegie Rd, Pikalu Rockholes, 26 o 54.795’S, 124 o 27.505’E, 4 September, 2010, IAEB, WAM 51572; Great Victoria Desert, Great Central Rd near Tjukayirla Roadhouse, Tugaila Rockhole, 27 o 09.355’S, 124 o 34.378’E, 3 September 2010, IAEB, WAM 51573; Great Victoria Desert, Ryans Bluff, gnamma on top, 27 o 14’ 04”S, 126 o 26’ 34”E, 16 May 1968, A.G. Matthews, WAM 51320; Great Victoria Desert, Great Central Rd, Eurothurra Rockhole, 5 September, 2010, IAEB, WAM 51574; Great Victoria Desert, Saunders Range North Rockhole, 27 o 49.693’S, 125 o 37.453’E, 29 August 2010, IAEB, WAM 51575; Great Victoria Desert, Point Saunders Waterhole, 27 o 50.865’S, 125 o 38.356’E, 30 August, 2010, IAEB, WAM 51576; Great Victoria Desert, Amy Waterhole, 27 o 52.097’S, 125 o 18.553’E, 27 August 2010, IAEB, WAM 51577; Great Victoria Desert, Hanns Lily Rockhole, 28 o 00.281’S, 124 o 44.832’E, 26 August 2010, IAEB, WAM 51578; Great Victoria Desert, Point Sunday Rd, Point Sunday Rockhole, 28 o 07.433’S, 124 o 03.077’E, 24 August 2010, IAEB, WAM 51579; Great Victoria Desert, Bartletts Bluff Rock Hole, 29 o 04.900’S, 124 o 36.615’E, 6 July 2010, Ian Elliot, WAM 51580; Leinster, 56 km N, Kathleen Valley (Wanjarri), ca 27 o 24’S, 120 o 38’E, pre 1978, J. Moriaty, WAM 51325; Laverton, 64 km SSE, Mt East, gnamma, 28 o 58’ 16”S, 122 o 39’ 21”E, August 1963, G. Hutchin, WAM 51315; Beacon, 40 km NW, Washington Rocks, 30 o 09’ 06”S, 117 o 34’ 41’E, 4 August 2012, BVT, WAM 51581; Beacon, 14 km NNW, Yellari Gnamma, 30 o 19’ 44”S, 117 o 49’ 58”E, 29 August 2009, BVT, WAM 51581: Bencubbin, 3 km N, northmost pit gnamma on Cadigan, 30 o 46’ 53”S, 117 o 52’22”E, 5 August 2012, BVT, WAM 51583. Diagnosis. Endite VI of thoracopod I with a broad base, evenly curved and with a long and thin digitiform process, a little longer than the basal width and tapering apically to a rounded tip. The digitiform process reaches about three quarters along medial surface of endite III, completely covering the spines at its distomedial surface. Truncated male rostrum at an angle of about 45 o to rostral axis. Description of male. Head (Figs. 6A, 10B,C): subequal to body size, finely punctuate. Fornices broad, angulated and arcuate over second antennal base. Small mound centroposteriorly, the site of the dorsal organ. Compound eyes close together about midway along the central ridge and just posterior to the frontal pore and two small lateral setal fields. Ocellus deeply embedded beneath the setal fields. Rostrum about as long as wide with lateral margin slightly expanded distally and with these margins slightly divergent. Lateral suture between compound eye and lateral fornix dividing a slightly elevated posterior head from a slightly depressed posterior rostrum. Central carina a sharp ridge bifurcating distally associated with terminal truncation to form a broadly based and sloping triangular facet. Ventral margin of triangular base slightly arcuate and ciliated. Head bent anteriorly from plane of compound eye/dorsal organ to rostrum by about 30 o and triangular truncated facet sloping at about 45 o from plane of rostrum. First antenna (Fig 10D) small much shorter than rostrum and with two antennomeres. Proximal antennomere cylindrical and distal antennomere clavate, about 2.5 times length of proximal antennomere, and bearing, mainly dorsally, numerous papillae. Second antennae (Fig 10E) biramous, well developed, twice as long as rostrum. Peduncle of three segments; proximal segment with three to four plumose setae, second segment with 1one to two spines and distal peduncular segment with about 14 short spines anteriorly against the first antennomere of anterior ramus. Anterior ramus of about 35 antennomeres and ventral ramus with a few more antennomeres. Both rami with long plumose ventral setae, one per antennomere, while anterior ramus with short dorsal setae also, almost always one per antennomere. Labrum large, well developed, clothed in small setae. Mandible broadly spatulate. First maxilla typical for genus and second maxilla absent. Carapace (Fig. 10A): with hinge line straight, umbo and growth lines lacking. Anterior margin broadly arcuate, curving evenly to ventral margin and back to the posterior, though posterior slightly narrower so that deepest part of carapace a little before midway along its length. Dorsally carapace slightly arcuate, thus hiding the hinge line. Valves roundly inflated laterally. Carapace surface finely punctate. Abductor muscle scar in an anteriolateral position about twice its diameter from the margin and associated with oval imprint of maxillary glands lying at about 40 o to the hinge line. Thorax. Ten thoracic segments, each with a pair of thoracopods. Anal plate (Fig. 10K) partly divided centroposteriorly, each half bearing long seta apically. Somite below enlarged, similarly divided with each half bearing a small denticle apically. Thoracopod I modified as a clasping appendage, right and left claspers equal in shape and size (Fig 3D, 6B, 10F). Endite VI with a broad base, evenly curved and with a long thin digitiform process, a little longer than the basal width and tapering apically to a rounded tip. This digitiform process closely appressed to endite III and reaching well beyond the latter’s spine row, to about two-thirds along the medial surface of endite III. Endite V three to four times larger than endite IV, subcylindrical and gently curved, and irregularly clothed in long setae, one series of about 15 stouter setae in a defined curved row extending from about one third way along the endite to almost the apex and the other setal series thinner and in a oval field somewhat dishevelled adjacent to the row. Endite IV asymmetrically shaped with margin adjacent to endite V gently curving and with few setae, while the opposite margin distinctly curved and clothed with many long setae. Endite III rectangular in lateral view though narrowing slightly distally and with longest axis aligned parallel to axis of thoracopod. Distomedial corner with a row of about eight triangular spines of various sizes. Mediolateral face with numerous stout setae mainly distributed marginally on the face but crowded in distomedial corner. Thoracopod II (Fig. 11) of typical general form with 5 endites medially, an exopod with dorsal and ventral lobes and an epipodite (Martin and Belk 1988). Endite I (= endite of praecoxa, Ferrari and Grygier 2012), subcylindrical with many short setae on distal (medial) surface and many long closely spaced setae on proximal margin and terminating in two teeth, each with two rows of denticles. Endites II and III rectangular, endite II about 50% longer than endite III, both with numerous shorter anterior setae and longer posterior setae. About 20 of the former on endite II with serrated margins on distal half, other anterior setae naked and located mainly on proximal and distal portion of Endite II and all along Endite III. Posterior setae of endites II and III plumose but lateral setules short. Endites IV, V and endopod digitiform with rounded apices and numerous long plumose setae similar to the posterior setae of endites II and II on their basal margins. A few pectinate setae near their apices. Palp without a hook apically.Ventral (i.e. distal) lobe of exopod lanceolate but widest just beyond its base and margined with long plumose setae distally and shorter plumose setae basally. Dorsal (i.e. proximal) lobe of exopod foliate and margined with short plumose setae except at its medodistal corner with its many longer setae. All these plumose setae with long setules. Epipod subcylindrical with a rounded apex and naked margins. Thoracopods III to XI similar to thoracopod II, though the last three much reduced in size and lacking epipodites and proximal lobe of the exopodites. Description of female. Head (Fig 10I, J): general structure similar to male. Anterior dorsal carina not bifurcated and rostrum not truncated, so that rostrum a little longer than wide. Anterior margin of rostrum arcuate, projecting medially. Head axis from cervical suture to rostrum slightly curved (<30 o). Carapace: (Fig 10H) as in male, umbo lacking. Same size and shape. Egg mass, if present, visible through the carapace. Thorax: Twelve thoracic segments, the last three with a lamella abdominalis consisting of a digitiform process anteriomedially, three spaced and long digitiform processes laterally and a obtuse lobe posteriorly (Fig. 6E F, 10K). Anal plate as in the male, but last somite, though with a pointed apex, generally more rounded than in male (Fig. 10K). Thoracopods: 12 pairs of thoracopods, thoracopods IX and X with exopod dorsal lobes cylindrical and extending dorsally beyond thoracic dorsum. These help to anchor the egg mass. Last five thoracopods much reduced without an epipodite and proximal exopodite. Resting egg: (Fig. 4D) Round, irregular low wide ridges enclosing enlongated irregular depressions. Size 141.2 ± 3.4 ųm (n = 5). Size. Length holotype 6.9 mm, paratypes (n=4) 6.6 – 7.0 (x = 6.85 ± 0.17 mm); height holotype 5.5 mm, paratypes (n=4) 5.8 – 6.0 (x = 5.9 ± 0.08 mm), width holotype 4.8 mm. Length allotype 6.9 mm, paratypes (n=4) 6.1 – 7.0 (x = 6.62 ± 0.36 mm), height allotype 5.5 mm, paratypes (n=4) 5.1 – 5.7 (x = 5.47 ± 0.33 mm), width allotype 5.0 mm. Variabilty. The male rostral terminal facet may slope at angles greater up to 60 o rather than about 45 o. The first antenna can be shorter than the rostrum, but always the distal antennomere is longer than the proximal antennomere. Likewise the second antenna is not always twice the length of the rostrum, but can be as short as 1.5 x the rostrum length, but in adults at least, the number of antennomeres always approximate 35. There may however be as few as eight setae on the third antennomere of the peduncle (instead of up to 14), and the basal peduncle antennomere can bear as many as 7 plumose setae. On the clasper, the digitiform process of endite VI may be much longer than its basal width, the palps variable in shape and setation, and the teeth on the medioposterior corner of endite III can number 6 to 9. In females the rostral apex may be notched at the anteriolateral corner and the lobes on the posteriolateral plate can vary in proportions and shape, though there are always two anteriodorsal digitiform processes. The lamella abdominalis presents differently in different individuals, probably because the posterior lobe sometimes is tucked under main lamina to form an efficient structure for holding eggs. The digitiform process can vary from triangular to digitiform in shape, and occasionally there are two rather than a single anteriomedial digitiform process. Distribution and Ecology. Lynceus baylyi sp. nov. occurs most reliably in gnammas (rockholes) in the remote central inland (Great Victoria and Gibson Deserts) of Western Australia. There are also a few records in pit gnammas curiously arranged in a line south of Paynes Find (Washington Rocks) to Beacon (Yellari Rocks) to Bencubbin (Cadigan Rock) to Trayning (the five pit gnammas 14 km north of town, Fig. 9B), perhaps indicating some past directional dispersal. Interestingly this could give some credence to an aboriginal legend concerning the mythical Nyimgarn, the Echnida, which came down from Ninghan Station (west of Paynes Find) to Trayning and dug out the five pits there with his snout. There is also an extension in distribution across to the northern Nullarbor in South Australia and the likelihood of occurrences in the Pitjantjatjara Lands of northwestern South Australia, given similar environment to that in the Great Victoria Desert. It is a long lived species, thought to live for at least 6–9 months (author, unpublished data) and is the largest Lynceus in Australia, growing to about 7 mm. It is invariably found in deeper gnammas, these generally being pipe gnammas in laterite or pit gnammas in granite (see Bayly et al. 2012; author unpublished data).Published as part of TIMMS, BRIAN V, 2013, A Revision of the Australian species of Lynceus Müller, 1776 (Crustacea: Branchiopoda: Laevicaudata, Lynceidae), pp. 501-533 in Zootaxa 3702 (6) on pages 516-520, DOI: 10.11646/zootaxa.3702.6.
Seminar on equal pay for equal work: offered by Industrial Relations Centre, 12-14 October, 1970
No full textHistory and implementation of equal pay in New Zealand State Services / L.A. Atkinson -- Legal and procedural problems of equal pay in the private sector / N.S. Woods -- Economics of equal pay / W.D. Rose -- Social implications of equal pay / Elizabeth Timms
Branchinella hearnii Timms, 2012, sp. nov.
No full textBranchinella hearnii sp. nov. Figs. 1 F, 5 B, 7. Etymology. This species is named for Roger Hearn of Manjimup, who first collected this species from Little Unicup Lake, near Lake Muir in southwest Western Australia in 2005 and then displayed beautiful live specimens to the staff and myself as a visiting scientist at the Department of Environment and Conservation’s aquatic laboratory at Wanneroo. Type locality. Western Australia, ca. 12 km N of Lake Muir, Little Unicup Lake, 34 o 19 ’ 46.9 ”S, 116 o 42 ’ 51.8 ”E, 19 August 2009, BVT Holotype. Male deposited in the Western Australian Museum. Total length: 28 mm Accession number: WAM C 49896. Allotype. Female. Total length: 28 mm. Accession number: WAM C 49897. Paratypes. 1 male, 5 females same data, WAM C 49898; 2 male, 7 females, Western Australia, ca. 10 km N of Lake Muir and 1 km S of Unicup Lake, ‘Branchinella’ Lake, 34 o 21 ’ 41 ”S, 116 o 43 ’ 22 ”E, 6 October 2008, BVT, WAM C 49899. Other Material. Numerous juveniles, Western Australia, ca. 12 km N of Lake Muir, Little Unicup Lake, 34 o 19 ’ 46.9 ”S, 116 o 42 ’ 51.8 ”E, 5 September 2007, R. Hearn, WAM C 49900; 1 male 9 females, Western Australia, ca. 14 km N of Lake Muir, Tolkerup West Lake, 34 o 19 ’ 59.4 ”S, 116 o 43 ’ 21.1 ”E, 6 September 2007, R. Hearn, WAM C 49901; 1 male, 1 female, Western Australia, ca. 10 km N of Lake Muir and 1 km S of Unicup Lake, ‘Branchinella’ Lake, 34 o 21 ’ 41 ”S, 116 o 43 ’ 22 ”E, 2 November 2007, R. Hearn, WAM C 49902; 12 juveniles, Western Australia, ca 18 km N of Lake Muir, ‘Cricket Ground Lake,’ 34 o 16 ’ 17.5 ”S, 116 o 42 ’ 03.8”E, 4 September 2008, R. Hearn, WAM C 49903; 2 males, 4 females, Western Australia, ca. 14 km N of Lake Muir, Tolkerup West Lake, 34 o 19 ’ 59.4 ”S, 116 o 43 ’ 21.1 ”E, 6 October 1908, BVT, WAM C 49904; many juveniles, 2.4 km SW of Watheroo, ‘Bentonite Lake,’ 30 o 18 ’ 46 ” S, 116 o 02’ 33 ”E, 5 September 2009, BVT, WAM C 49905; 6 males, 2 females, 4.7 km W of Coomberdale, 30 o 28 ’ 02”S, 115 o 59 ’ 18 ”E, 6 September, 2009, BVT, WAM C 49906. Diagnosis. Frontal appendage short and forked and not reaching beyond the bases of the second antennae. Second antenna medial surface of proximal antennomere with large plate like tumidity on each side. Each gonopod flanked by a lateral swelling with a central hollow. Females with a lateral tumidity on each genital segment and paired dorsal tumidities on the first genital segment. Anterior setae of fifth thoracopod with endites 4 and 5 anterior setae naked and more than twice as long as second anterior setae on endites 4–6 which carry a pecten of fine spines. Description. Male. Eyes freely projecting on peduncles about the same length as eye diameter. First antennae filiform, a little longer than second antenna proximal antennomere, and terminating in 3–5 long sensory setae. Second antennae. Proximal antennomere slightly shorter than distal antennomere. Proximal antennomeres usually well separated from each other and fused basally at about 45 o. Each proximal antennomere with a large lamellar projection aligned ventrally. This projection, lacking sensory denticles or spinules, supported posteriorly by a ventrally narrowing ridge. Distal antennomeres of uniform diameter, gently arcing medially, and with weakly developed transverse medial ridges. Frontal appendage small, bifurcated, not protruding beyond the fused basal antennomeres. Fifth thoracopod with endite 1 + 2 and 3 evenly curved, the former about three times the size of the later. Anterior setae of endite 1 naked, of similar length to adjacent posterior setae. Anterior setae of endite 2 a little shorter than first anterior setae, bearing a pecten of spines and attended at its base by a small smooth spine. Endite 3 with an anterior setae longest of the three anterior setae on endites 1 to 3, about 7 / 8 th the length of the adjacent posterior setae, and bearing a pecten of spines. This anterior setae also attended by a small spine at its base. Endites 4–6 asymmetrical and covered with small spines. Endites 4 and 5 with two anterior setae and endite 6 with one anterior seta, representing two types. The first of all three endites, about 1 / 3 rd the length of the adjacent anterior setae and with a fine pecten most of their length. The second type on endites 4 and 5 only, 3 / 4 the length of adjacent posterior setae and naked. Posterior setae of all endites long and numbering about 27 on endites 1 + 2, about 9 on endite 3, then 4, 3, 4 respectively on endites 4–6. Those on endites 1 + 2 increasing in length basally to apex. Endopod broadly triangular shaped but with two closely spaced apices; straightest medial surface bearing about 12 spaced setae and curved lateral surface bearing numerous (ca 70) closely spaced setae. Exopod unevenly oval (medial edge more rounded than lateral edge) bearing about 90 closely spaced posterior setae. Setal bases with 3–6 minute spines. Epipodite elongate oval and unadorned. Praeepipodite large and broad, larger than endopod and exopod combined, and with a finely serrated margin. Genital segments about same width as adjacent thoracic and abdominal segments. Bases of gonopods a little longer than one abdominal segment each flanked by a lateral swelling with a central hollow. Everted gonopod with a long row of about 15 triangular spines medially and a wide field of longer thin spines on opposite side. Cercopods typical for Branchinella. Female. Eye plus peduncle about half the width of the head. First antenna filiform, a little longer than eye plus peduncle. Second antenna lamellar, about three times the head width on each side and narrowing to a sharp symmetrical apex. Second antennae fused together medially. Genital segments larger than adjacent thoracic and abdominal segments and with distinctive swellings and projections First genital segment with a large bulbous lateral tumidity each side and two adjacent asymmetrical pyramid shaped projections dorsally. Apices of these projections produced posteriorly and laterally. Second genital segment with another lateral tumidity on each side but it is sac-like and directed dorsally. Brood pouch bulbous anteriorly with a marked ventral swelling, but tubular posteriorly and terminating at about the third abdominal segment. Fifth thoracopod and cercopods as in male. Egg diameter 485 µm, with about 13 polygonal depressions, each shallow with sharp ridges and concave floor with dimples (Timms and Lindsay, 2011). Variability. Some variability in features was noticed in the material available. Fusion of the second antennal proximal antennomeres ranges from almost 90 o to about 50 o. In males the two ventral tumidities may be up to 25 % smaller than in the holotype and the triangular spines on the gonopod may number up to 24 (see Figs 2 A, B, Timms, 2008). In females the lateral tumidities on the genital segments may be smaller than in the allotype and the apices of the second antennae asymmetrical (see Figs 2 C, D, Timms, 2008), and there may be two weak ventral hooks pointing posteriorly on the brood chamber. The paired dorsal pyramid-shaped projections are invariable. Size. Mature B. hearnii sp.nov. are relatively large. There are 10 males in collections from the Lake Muir area ranging in size from 24 to 30 mm and averaging 26.7 mm, and 13 females in the same collections ranging in size from 19 to 38 mm and averaging 34.6 mm. Generally it is the smaller (immature?) males and females with the smaller tumidities. Differential diagnosis. Branchinella hearnii sp. nov. is almost identical with B. compacta Linder, with which it was initially confused (Timms, 2008), but its 16 SmtDNA differs by 12.8 % (Pinceel et al., 2012). It is separable from this species by many morphological features, including: (a) in males, the ventral lamellar projection on the second antennal proximal antennomere is much larger in B. hearnii sp.nov. than in B. compacta where it is hardly present at all (Fig 4 A, B); (b) most B. compacta males have small sensory spines lining much of the medial surface of the proximal antennomere, whereas this surface is smooth in B. hearnii sp.nov.; (c) in female, B. compacta lateral tumidities on its genital segments are significantly smaller than the large ones in B. hearnii sp.nov. (Fig. 4 C, D, 7 F, G); (d) The anterior setae on endites 4–6 are different in the two species, in B. compacta there are three longer setae each with pectens of spines and two very short naked setae, whereas in B. hearnii sp.nov. there are two longer naked setae and three shorter setae with pectens (Fig. 5 A, B); (e) in B. compacta the medial endopodal setae are feathered and have 10–14 small spines basally whereas in B. hearnii sp.nov. the medial endopodial setae are short, naked and basally spineless (Fig. 5 A, B); and (f ) B. compacta occurs in southeastern Australia, mainly in western Victoria (Geddes, 1981) but including some lakes on the Monaro, NSW (see above), while B. hearnii n.sp, inhabits sites in southwestern Western Australia, both north and south of Perth. Resting eggs of these two species are easily differentiated: those of B.hearnii sp.nov. have fewer depressions than eggs of B. compacta ( 25) and their walls are sharp compared to rounded in B. compacta (Fig. 1 D, F) (Timms and Lindsay, 2011). Given the genital segment tumidities and projections in females and the ventral lamellar projection in the clasper apparatus of males (reminiscent of males of Parartemia — Timms, 2012), it most likely exhibits lock and key amplexus (sensu Rogers, 2002). The male claspers would appress the genital segments perhaps either anterior or posterior to the dorsal pyramid shaped projections, to form a tight union. While all species of the Australian brine shrimp (Parartemia) use lock and key amplexus (Rogers, 2002; Timms, 2011), B. hearnii sp.nov. is the only second known species in Branchinella to possibly use it, its close relative B. compacta being the other candidate. The advantage to it is not clear in the Unicup area as no other species of Branchinella is known from this area, but in the Coomberdale — Watheroo area, B. hearnii sp.nov. shares its known sites with B. erosa sp. nov. Distribution and Ecology. B. hearnii sp.nov. occurs in a few hyposaline lakes to 8 g /L to the north of Lake Muir in southwestern Western Australia as well as in a few lakes, also hyposaline to 12 g /L, in the Coomberdale — Watheroo area north of Moora, Western Australia. In both areas the lakes in which it is found contain clear waters, turbidities 200 NTU.Published as part of Timms, Brian V, 2012, Further studies on the fairy shrimp genus Branchinella (Crustacea: Anostraca: Thamnocephalidae) in Australia, with descriptions of five new species, pp. 35-60 in Zootaxa 3595 on pages 46-49, DOI: 10.5281/zenodo.25459
African American Storyteller, Victoria A. Casey McDonald
No full textIn the deep resonance of storyteller Victoria A. Casey McDonald’s voice, you will hear her tell stories about growing up in Western North Carolina, and the kind of Christmas she had as a child. The late Victoria was our friend, a CSA board member, author, and “Stories of Mountain Folk” interviewer
Lynceus magdaleanae TIMMS, 2013, sp. nov.
No full textL. magdaleanae sp. nov. (Figs. 3E, 4E, 12) Etymology. This species is named for Magdaleana Davis (nee Zofkova) to honour molecular her work in identifying the presence of at least three species of Lynceus in Western Australia. Type locality. Australia, Western Australia, 18 km NE of Goomalling, East Oak Park pit gnamma, 31 o 08’ 20”S, 116 o 52’ 49”E, 19 October 2011, collector BVT. Holotype. Male deposited in the Western Australian Museum (Perth). Length 5.5 mm. Registration number WAM 51624. Allotype. Female deposited in the Western Australian Museum (Perth). Length 5.0 mm. Registration number, WAM 51625. Paratypes. 8 altogether; 2 males and 2 females deposited in Australian Museum (Sydney) Registration number, AM P89077, and 2 males and two females deposited in Western Australian Museum (Perth), WAM 51626. Other Material. Northern Territory: Papunya, 4 km E, gnamma on Warumpi Hill, 23 o 15’S, 131 o 54’E), 14 May 1998, IAEB, AM P90069; Macdonnell Ranges, Palm Creek in PalmValley, 24 o 03’ 25”S, 132 o 44’ 47”E, 13 September 1958, D.F. McMichael, AM P55727 & P88376; Kata Tjuta (= Mt. Olga), 25 o 17’ 22”E, 130 o 44’ 18”E, 11 August 1966, A Frecker & P. Keane, AM P55684 & P88157. Queensland: 105 km N of Hughenden, L. Louisa, 19 o 53’ 36”S, 144 o 15’10”E, 7 April 2009, BVT & MS, AM P89078; 7 km E of Boulia, burrow pit, 22 o 54’ 44”S, 139 o 58’24”E, 4 March 2011; BVT & MS, AM P89079; 2 km E of Boulia, swamp, 22 o 54’ 41”S, 139 o 55’ 30”E, 4 March 2011, BVT & MS, AM P90067; 76 km NE of Aramac, L Galilee Hazelmere Inlet, 22 o 26’ 00”S, 145 o 42’30”E, 15 February, 2010, BVT & MS, AM P90068. South Australia: Musgrave Ranges, Erliwunyawunya Rockhole, 29 May 1961, H.G. Cogger, AM P15286, P55685, P88143, P88380; Musgrave Ranges, 7 km S of Mt. Woodroffe, waterhole in Currie Creek tributary, 9 May 1983, 26 o 19.134’E. 131 o 44.715’E, W. Zeidler, SAM C7631; Everard Ranges, Carmeena Rockhole, 27 o 06.51’S, 132 o 33.011’E, 14 August 1914, Capt S. A. White, SAM C7632; Everard Homestead, Victoria Springs, 27 o 0.368’S, 132 o 42.565’E, 31 October 1970, E Matthews SAM C7646; Gawler Ranges, pool near Hiltaba Homestead, 32 o 09.422’S, 135 o 04.084’E, P. Aerfeldt & P. Cokerham, 14 October 1984, SAM 7633; Gawler Ranges, pool near Yarna Homestead, 32 o 03.213’S, 135 o 07.751’E, P. Aerfeldt & P. Cokerham, 15 October 1984, SAM C7634; Gawler Ranges, pool near Paney Homestead, 32 o 35.240’S, 135 o 25.803’E, P. Aerfeldt & P. Cokerham, 16 October 1984, SAM C7635; Gawler Ranges National Park, 40 km NE of Wudinna, Policemans Point, 32 o 35’ 17”S, 135 o 26’ 30”E, 5 October 2009, BVT, SAM C7636; 13.5 km NE of Minnipa, Pildappa Rock, western pit gnamma, 32 o 45’ 05”S, 135 o 13’ 48”E, 23 November 2003, BVT, SAM P7637; 25 km ENE of Wudinna, Peela Rock, northernmost pit gnamma, 33 o 00’ 09”S, 135 o 43’ 28”E, 26 October 2011, BVT, SAM C7638; Frances, Lake Cadnite, 36deg 42.685’S, 140deg 56.559’E, 6 May 1979, W. Zeidler, SAM C7639. Western Australia: Little Sandy Desert, Hutton Range, 16 km N, ca 24 o 46’S, 123 o 48’E, 4 September 1971,no collector recorded, WAM 51322; 83 km N of Northhampton, Euardy Station, roadside ditch, 27 o 36’ 31”S, 114 o 41’ 43”E, 5 July 2011, Koen Martens, WAM 51591; 50 km NW of Cue, pit gnamma on Walloo Hill, 27 o 14’ 47”S, 117 o 25’ 44”E, 23 August 2009, BVT, WAM 51592; Gibson Desert, Gunbarrel Highway, Mt Samuel, pool (probably one of the Mangi gnammas) 1.6 km WSW, 1 June 1966, 25 o 45’ 50”S, 125 o 55’ 50”E (for Mt Samuel), K. Davey. AM P55668, P88159; Great Victoria Desert, Knight Gnamma Holes, 28 o 12.795’S, 124 o 39.993’S, 25 August 2010, IAEB, WAM 51593; Great Victoria Desert, Sunday Surprise Rocks, 27 o 57.379’S, 125 o 00.350’E, 27 August 2009, IAEB, WAM 51594; 60 road km SE of Giles, Kutjurritari Gnammas, ca 25 o 17’S, 127 o 49’E, 23 September 2009, BVT, WAM 51595; Great Victoria Desert, Connie Sue Highway, gnammas 10 km W of Lake Serpentine, 26 August 1980, J.A. Forrest, WAM 51596; Warburton, Windaroo Rockhole, 21 June 1979, J. Blyth, WAM 51597; 71 km WSW of Menzies, pit gnamma on Scorpion Rocks, 29 o 51’ 10”S, 120 o 19’ 36”E, 10 October 2011, Bindy Datson, WAM 51598; Paynes Find area, 2 September 1991, no date or collector recorded, WAM 51317; 11 km NNW of Paynes Find, south pit gnamma on Bullamanya Rocks, 29 o 09’ 53”S, 117 o 39’ 36”E, 5 October 2010, BVT, WAM 51599; 15 km SW of Wubin, pit gnamma on Miamoon Rocks, 30 o 09’ 07”S, 116 o 20’ 45”E, 14 September 2003, BVT, WAM 51600; 25 km E of Wongan Hills, Dingo Rock, 30 o 50’ 41”S, 116 o 58’ 30”E, 27 September 2012, BVT, WAM 51601; 43 km NNW of Hyden, rock pool at base of Mt Walker; 32 o 04’ 11”S, 118 o 45’ 21”E, 31 August 2009, BVT, WAM 51602; 17 km NE of Hyden, northern pit gnamma at The Humps, 32 o 18’ 41”S, 118 o 57’ 37”E, 4 August 2005, BVT, WAM 51603; near Buncubbin, Dajoing, soak at Yalburnunging Rock, no date, E. Simpson, WAM 51318; 40 km NE of Mukinbudin, pit gnamma on Yanneymooning Rock, 30 o 43’ 04”S, 118 o 33’ 24”E, 24 October 2010, BVT, WAM 51604; 44 km S of Coolgardie, pit gnamma on Victoria Rock, 31 o 17’ 37”S, 120 o 55’ 32”E, 14 September 2002, IAEB & BVT, WAM 51605; 40 km E of Lake King Township, pit gnamma on Lilian Stokes Rock, 33 o 04’ 06”S, 120 o 05’ 49”E, 1 September 2009, BVT, WAM 51606; 95 km SW of Norseman, near Metcalf Lake, creek crossing, permanent water under rock tunnel, 32 o 28’ 30”S, 120 o 49’E, no date or collector recorded; WAM 51323; Dundas, rockhole, ca 32 o 27’S, 121 o 46’E, no date or collector, WAM 6735; 27.5 km NE of Norseman, Buldania Rocks, western pit gnamma, 4 December 1959, D.H. Edwards, AM P55661 & P88381; 89.6 road kms E of Norseman off Eyre Highway, Smithania Rock, June 1964, Lee, AM P55656 & P88153; 196 km E of Norseman, a pit gnamma on Balladonia Rock, 32 o 27’ 41”S, 123 o 51’ 48”E, 18 March 2007, BVT, WAM 51607. Diagnosis. Thoracopod I of male with endite VI with a broad almost rectangular base because of a distinct angular hump of about 110–120 o on the distal surface, and a short somewhat triangular process medially, much shorter than the base and reaching only about a third of the medial length of endite III, and not covering all the teeth on the distomedial surface of endite III. Description of male. Head (Fig 12B,C) subequal to body size, finely punctuate. Fornices broad, angulated and arcuate over second antennal base. Small mound centroposteriorly the site of the dorsal organ. Compound eyes close together about midway along central ridge and just posterior to the frontal pore and two small lateral setal fields. Ocellus deeply embedded beneath the setal fields. Rostral dorsal surface lower than surface posterior to compound eye, the junction marked by the lateral suture from the eye to the nearby fornix. Rostrum about as long as wide with upper surface significantly expanded terminally (by about 30% each side). Central carina bold and bifurcated distally associated with terminal truncation to form a broadly based triangular terminal facet. This facet ciliated on the ventral edge and almost at right angles to head alignment and with anterior margin of base straight. First antenna (Fig 12D) small, a little shorter than rostrum, and with two antennomeres. Proximal antennomere cylindrical with concave face terminally and supporting second antennomere. This antennomere subequal in length to the first, clavate and with a few short setae terminally and on dorsal distal surface. Second antenna (Fig 12E) biramous, well developed, twice as long as rostrum. Peduncle of three segments, proximal segment with 3–4 plumose setae, middle segment with 1–2 spines and the distal peduncular segment with about 8 short spines mainly at the base of the anterior ramus. Anterior ramus with about 25 antennomeres and ventral ramus with a few more antennomeres. Both rami with long plumose ventral setae, one per antennomere, while anterior ramus with short dorsal setae also. Labrum large, well developed, clothed in small setae. Mandible broadly spatulate. First maxilla typical for genus and second maxilla absent. Carapace (Fig 12A) with hinge line slightly arcuate, umbo lacking and no growth lines. Anterior margin broadly arcuate, curving evenly to ventral margin and back to the posterior, though posterior is slightly narrower so that deepest part of carapace a little before midway along its length. Dorsally carapace slightly arcuate, thus hiding the hinge line. Valves roundly inflated laterally. Carapace surface finely punctate. Abductor muscle scar in an anteriolateral position about twice its diameter from the margin and associated with oval imprint of maxillary glands lying at about 40 o to the hinge line. Thorax. Ten thoracic segments, each with paired thoracopods. Anal plate partly divided centroposteriorly, each half bearing a long seta. Somite below enlarged, even more divided centroposteriorly and each half bearing a small denticle apically. Thoracopod I (Fig 3E, 12F) modified as a clasping appendage, the right and left claspers equal in shape and size. Endite VI with a broad almost rectangular base because of a distinct angular hump of about 110–120 o on the distal surface, and a short somewhat triangular medial process, much shorter than the base and reaching only about a third of the medial length of endite III and not covering all the spines row on the distiomedial surface of endite III. Endite V cylindrical and straight, and about two and a half times longer than broad and four to five times larger than endite IV. Endite V with a vertical row of about 13 larger stout setae from about one third of the endite’s length to its apex and also with an oval field of numerous lithe setae centred about 90 o around the palp but spreading close to the distinct setal row and covering the distal two-thirds of the palp. Endite IV oval in profile and margined with numerous setae mainly on the side distal to Endite V. Endite III rectangular but distinctly narrowing distally and with major axis at right angles to thoracopod axis. A row of about nine triangular spines distiomedially and a large field of stout setae mediolaterally clumped distally. Thoracopod II of general form for Lynceus (Martin & Belk, 1988) and depicted for L. baylyi (Fig.11) with two significant differences: 1) it lacks serrated anterior setae, all anterior setae being naked and 2) the distal lobe of the exopod narrows evenly along its length instead of having a distinctly wider area near its base. Thoracopods III to XI similar to thoracopod II, though the last three much reduced in size and lacking epipodites and proximal lobe of the exopodites. Description of female: Head (Fig. 12G,H): general structure similar to male. Compound eyes, ocellus, frontal pore and setal fields as in male. However anterior dorsal carina not bifurcated and rostrum not truncated, so that rostrum a little longer than wide. Rostrum increases in width anteriorly by about 30% on each side. Central carinae bold and lateral suture marking boundary between higher posterior surface and lower rostral dorsal surface as in male. Anterior margin of rostrum arcuate, but with a small notch at each anteriolateral corner. Carapace as in male, umbo lacking, no growth lines, same size and shape. Egg mass, if present, visible through the carapace. Thorax. Twelve thoracic segments, the last three with a lamina abdominalis laterally (Fig 12J). This lamina with an obtuse process anteriorly, two subequal triangular lateral lobes and a larger triangular lateral lobe posteriorly. A thin digital process arising dorsolaterally from a broad swollen base between the clavate process and the first triangular lobe. Anal plate as in the male, but last somite more rounded than in male. Thoracopods. 12 pairs of thoracopods, diminishing in size posteriorly, and thoracopods IX and X with exopod dorsal lobes cylindrical and extending dorsally beyond thoracic dorsum. These, plus the lamina abdominalis, help to anchor the egg mass. Resting egg. (Fig 4E) Round, irregular low wide ridges enclosing enlongated irregular depressions. Size 111.5 ± 4.6 ųm (n = 5). Size. Length holotype 5.5 mm, paratypes (n=4) 5.2 – 5.8 (x = 5.5 ± 0.35 mm); height holotype 5.0 mm, paratypes 4.2 – 5.1 (x = 4.75 ± 0.36 mm), width holotype 4.4 mm. Length allotype 5.0 mm, paratypes 4.9 – 5.4 (x = 5.15 ± 0.21 mm), height allotype 4.7 mm, paratypes 4.2 – 5.2 (x = 4.6 ± 0.42 mm), width allotype 3.9 mm. Variability. In males the truncated terminal facet of the rostrum is not always at 90 o to the rostral axis, but may be as low as 75 o. The rostrum may be expanded terminally by about 20–25%, rather than 30%, and the dorsal carina is not always bold, hardly standing expressed beyond the rostral dorsal surface. On the clasper, the hump on the basal part of endite VI is not always so distinct as in the type, the endites V and IV are variable in shape and setation, and the spines on the distomedial corner of endite III vary from six to nine. Interestingly the sites in the distributional outlier of north Queensland, mostly have 22–26 large setae in the setal row on endite V and only five to seven teeth on the distomedial corner of endite III, whereas the average is about 15 setae and seven to nine teeth over most of the range in WA and SA. In females, the rostrum may not be as wide terminally as in the type and on the posteriolateral plate the size and shape of the lateral lobes are variable, but there is always only one dorsal digitiform process anteriorly. Distribution. L. magdaleanae sp. nov. occurs ubiquitously in deeper gnammas throughout the Wheatbelt (e.g. Fig. 9C) and adjacent Goldfields of Western Australia (except the strip from Beacon to Trayning occupied by L. baylyi sp.nov. ― see above). It also occurs in pit gnammas throughout the northern Eyre Peninsula, Gawler Ranges and northwestern half of South Australia and the southwestern Northern Terrritory, and sporadically in gnammas in the central deserts of Western Australia. L. magdaleanae sp. nov. is also established in northern Queensland but not in gnammas; these occurrences and habitat choice seem incongruous considering its widespread occurrence in gnammas in WA and western SA. Perhaps these northern Queensland records are of a separate species, but so far they are only distinguishable by a slightly different count of setae of endite V and of spines on the distomedial corner of endite III. Specimens from the Wheatbelt and Goldfields of Western Australia were previously misidentified by MZ and the author as L. macleayanus (see Bayly et al 2012; Passaq et al. 2011; Timms 2006, 2012; Zofkova 2007).Published as part of TIMMS, BRIAN V, 2013, A Revision of the Australian species of Lynceus Müller, 1776 (Crustacea: Branchiopoda: Laevicaudata, Lynceidae), pp. 501-533 in Zootaxa 3702 (6) on pages 521-524, DOI: 10.11646/zootaxa.3702.6.
Limnadia victoriensis
No full textLimnadia victoriensis (Sayce, 1903) Eulimnadia victoriensis Sayce, 1903: 246–247 (text), 248 (synopsis), pl. 33; Wolf, 1911: 254 (list); Dakin, 1914: 295 (list); Henry, 1924: 122 (list). Limnadia victoriensis.– Daday, 1925: 150 (key), 171–172, fig. 120; Brtek, 1997: 58 (list). Type material. National Museum of Victoria. Distribution. Elwood (Victoria) (Sayce, 1903).Published as part of Richter, Stefan & Timms, Brian V., 2005, A List of the Recent Clam Shrimps (Crustacea: Laevicaudata, Spinicaudata, Cyclestherida) of Australia, Including a Description of a New Species of Eocyzicus, pp. 341-354 in Records of the Australian Museum 57 (3) on page 348, DOI: 10.3853/j.0067-1975.57.2005.1454, http://zenodo.org/record/468562
Art Forum - Lynn, Victoria
No full text4 September 2002. -- Victoria Lynn is a distinguished curator and writer who has worked in the field of contemporary and Australian visual arts over the last two decades. She has recently been appointed Director of Creative Development at the Australian Centre for the Moving Image, an innovative exhibition venue located at Federation Square in Melbourne, due to open later this year. She is currently Chair of the Visual Arts/Crafts Board of the Australia Council. From 1991 to 2001 she was Curator of Contemporary Art at the Art Gallery of New South Wales, and the numerous exhibitions she has curated have received substantial critical acclaim. She is the author of many articles, catalogue essays and edited collections, and books on artists Marion Borgelt and Eugene Carchesio. In her lecture she will discuss both Australian and International work, the challenges at the Australian Centre for the Moving Image, and the different modes and understandings of what the moving image can and might be understood as
Parartemia auriciforma Timms & Hudson, 2009, sp. nov.
No full textParartemia auriciforma sp. nov. (Figure 5) Type material. Holotype. Male, SOUTH AUSTRALIA, Great Victoria Desert, Wyola Lake, (29 o09’00”S, 130 o 14 ’ 30 ”E), 15 December 1994, P. Hudson, SAM C 6794; Allotype. Female, same collecting data as holotype, SAM C 6797; Paratypes. Two males and two females, same collecting data as holotype, SAM C 6795, C 6796. Description. Male. Length 11.5 mm (head and thorax 5 mm and abdomen 6.5 mm). Head (Fig. 5 A) with first antenna filiform a little longer than eye plus peduncle. Basal antennomeres of second antenna fused proximally at an angle of about 50 degrees from body axis. Ventral margin with paired linear, ventral processes (VP, Fig 5 A) clothed irregularly with small spines and tubercles mainly at lateral and medial corners. Overall dimensions about 3 times longer than deep with lateral edge about one third the length of medial edge. Lateral corner rounded and medial corner prominent and bluntly triangular. Area between ventral processes concave without any medial projection or doming. Frontal surface of basal antennomeres with paired ridges parallel to body axis and terminating in small triangular frontal processes (FP, Fig 5 A). These frontal processes subequal in length to depth of ventral processes and length subequal to basal width. Second antennal distal antennomere curved, a little longer than basal segment and terminating in a small spine-like appendix. Labrum lacking a spine. Each side of thorax with a near symmetrical lateral lobe on each segment and small lateral lobe on first genital segment (L, Fig. 5 B). Eleven pairs of thoracopods with first two and last three noticeably reduced. Fifth thoracopod structure as in P. acidiphila, though numbers of posterior setae slightly different (see above). Gonopods (Fig. 5 C) paired, basal parts fused together and about twice the diameter of tubular free apical parts. Basal part with a broad triangular process (DP, Fig. 5 C) apically and apical tube with a finger-like process subapically. Neither process hooked. Abdominal segments increasing in length and narrowing 1 to 6, particularly 5 and 6, so that 6 th segment about twice the length of first. Telson about half the length of first abdominal segment and bearing fringed cercopods subequal in length to fifth abdominal segment. Description. Female. Length 8.5 mm. Head (Fig. 5 D) with first antenna filiform and about half the length of the eye plus peduncle. Second antenna flattened and about twice the length of eye plus peduncle and terminating in a markedly narrowed, acute apex on the posterior side. Labrum with a prominent recurved spine. Thorax with 10 pairs of thoracopods, similar in structure to those of male. Eleventh thoracic segment without appendages Tenth thoracopod (Fig. 5 G) reduced: endites with few posterior setae, endopodite and exopod with about 12 and 20 such setae respectively, and epipodite smaller than both exopod and praepipodite. Posterior thoracic segments, particularly those of 7 th to 10 th segments, expanded laterally (Fig. 5 E). Eight and ninth segments with tuberculate lateral lobes terminating in hollowed out auriculiform structures, about one-sixth segment width. Segments 5, 6 and especially 7 th with simpler, less prominent lateral extensions. Segment 10 with lateral blunt triangular projection on each side and segment 11 with dorsolateral surface uneven and consisting of two triangular anteriorly pointed mounds (TM, Figs 5 E,F) on each side. Surface of both segments 10 and 11 papillate. Lateral brood pouches (Fig. 5 F) almost spherical in shape but with small lobes ventrally and connected ventrally to a shared gonopore on a short tubular protrusion. Dorsal surface of brood chambers pigmented and each chamber with about 25 spherical smooth-surfaced eggs in mature ovigerous females. Abdominal segments largely as in male, but with the telson proportionally larger and all segments papillate. Etymology. The specific name reflects the auriculiform lateral lobes of the female. Variability. Adult male lengths vary from 10.5 to 12mm and adult femal from 7.9 to 8.7 mm. The ventromedial surface of the male fused basal antennomeres is concave in most specimens, but is convex in some and rarely there is a small central knob. The antennal distal antennomere apex is occasionally not appendix like, but simply narrowing to a sharp point. In juvenile females the ear-like structures of the 8 th and 9 th lobes are undeveloped.The lobe on the 10 th thoracic segment may be more rounded and symmetrical than asymmetrical and triangular. Differential diagnosis. Parartemia auriciforma males are most similar to those of P. longicaudata, while the females have no close morphological similarities to other species. Like P. longicaudata, P. auriciforma has a wide space between the ventral processes without any medial process of any kind as in most other species of Parartemia. In P. longicaudata this space is convex, but in P. auriciforma it is usually concave. In both species the ventral processes are similarly shaped, but in P. longicaudata they are about twice as long as deep FIGURE 5. Parartemia auriciforma n.sp. Male A-C, Holotype; Female D-G, Allotype; both Wyola Lake, SA. A, anterior view of head with first and second antennae (VP = ventral processes, FP = frontal processes); B dorsal view of thorax segments 1-11, genital segments 1 and 2 and first abdominal segment (L = lobes); C, gonopods and genital segments (DP = digitiform process); D, lateral view of head; E, dorsal view of thoracic segments 5-11, genital segments, brood pouches and first abdominal segment (TM = triangular mounds); F, lateral view of brood pouch region and adjacent thorax; G, 10 th thoracopod with anterior setae. Scale bars 1 mm. compared to three times in P. auriciforma. The frontal processes also tend to be more prominent in P. longicaudata where in most specimens they are twice as wide as deep, compared to equal width and depth in P. auriciforma. Most P. a u r i c i f o r m a have a spine-like appendix at the apex of the second antennal antennomere, which is absent in P. longicaudata. Both the first antenna and cercopods are proportionally longer in P. longicaudata than in P. auriciforma and overall P. longicaudata tends to be a larger species usually 20–30 mm in length while P. auriciforma is a smaller species, 10–12 mm in length. Thoracic lateral lobes are unusual in males of Parartemia, and those of P. auriciforma are similar to those of P. triquetra n. sp. Besides differences between these two in lobe symmetry, there are many other differences in the distal antennal antennomere, ventral processes and frontal processes, as discussed later. For female P. a u r i c i f o r m a the distinctive features are the lateral auriculiform lobes on many posterior thoracic segments, the twin spherical brood pouches, and to a lesser extent the triangular lateral lobe on segment 10. Its head and abdominal structures are not at all distinctive, and the lack of thoracopods on segment 11 is shared with a few other species (e.g. P. informis, P. serventyi). Also shared with a few other species is the lack of swellings on posterior thoracic segments (i.e. 8 –11) (e.g. P. zietziana, P. minuta) and lack of narrow sclerotised ridges on these later thoracic segments (e.g. P. cylindrifera). A few species have lateral lobes on posterior segments (e.g. P. informis, P. longicaudata) but not like in P. auriciforma, which is the only species with auriculiform lateral lobes. P. auriciforma shares with P. triquetra n. sp. (see later) in having two separate, almost spherical, brood pouches, though they are connected ventrally. In other species there is either one chamber (e.g. P. cylindrifera, P. minuta) or two joined dorsally and usually extended posteriorly (e.g. P. zietziana, P. longicaudata, P. extracta, P. serventyi Linder, 1941). As in many species of Parartemia, the eggs are not distinctive microscopically. Type locality. Wyola Lake is an unstudied episodic saline lake, difficult of access in the remote Great Victoria Desert. Specimens used in this study were reared from sediment collected from the lake. Distribution. P. a u r i c i f o r m a is known only from its type locality in the Great Victoria Desert (Fig. 4). It is not known how widespread it is, as lakes in the immediate vicinity have not been sampled, but some further away have different species―the Serpentine lakes 140 km to the northwest have P. triquetra n. sp. and the Yarle lakes, 172 km to the southeast support P. y a r l e e n s i s n. sp.Published as part of Timms, Brian V & Hudson, Peter, 2009, The brine shrimps (Artemia and Parartemia) of South Australia, including descriptions of four new species of Parartemia (Crustacea: Anostraca: Artemiina), pp. 47-68 in Zootaxa 2248 on pages 54-57, DOI: 10.5281/zenodo.19074
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