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Asterocheres neptunei Johnsson 2001
No full textAsterocheres neptunei Johnsson, 2001 Material examined. 4 females (UFBA 0 0 0 6 CRU) associated with P. cristata from Bimbarra Island, Madre de Deus, Bahia. Collected by R. Johnsson and R. Bispo, 0 1 August 2004. Morphology. Asterocheres neptunei has a siphon reaching insertion of P 1, each maxilulle lobe has 4 setae, the antennal exopod has 3 setae, the free segment of P 5 is armed with 2 setae and the caudal rami are slightly longer than wide. Remarks. This species has previously only been recorded from sponges collected at 3 m below low tide in Picinguaba (São Paulo), an inlet located at the southeast region of Brazil (Fig. 1) (Johnsson et al. 2001). Johnsson et al. (2001) did not determine A. neptunei ’s host, so it is possible that the host (Placospongia) has not been recorded further south in Brazil or that A. neptunei recorded in Picinguaba was living associated with a different sponge. As Johnsson et al. (2001) found seventy-four specimens of A. neptunei in Picinguaba and only four were collected in association with P. cristata in Bahia, it may be possible that P. cristata is not be the principal host for A. neptunei. Consequently, although A. neptunei is not host restricted, it may have a host preference, however such questionings need further studies to be clarified. This is the first record of both, the host sponge Placospongia cristata and its symbiont, A. neptunei in Bahia, therefore the present record extends their distribution to the northeast of Brazil.Published as part of Bispo, Ricardo, Johnsson, Rodrigo & Neves, Elizabeth, 2006, A new species of Asterocheres (Copepoda, Siphonostomatoida, Asterocheridae) associated to Placospongia cristata Boury-Esnault (Porifera) in Bahia State, Brazil, pp. 23-34 in Zootaxa 1351 on page 25, DOI: 10.5281/zenodo.17453
Client Assessment in Transactional Analysis – A Study of the Reliability and Validity of the Ohlsson, Björk and Johnsson Script Questionnaire
No full textA script questionnaire and associated checklist developed by Ohlsson, Johnsson & Björk (1992) was used by the author and two professional colleagues to independently assess ten clients of a year-long transactional analysis therapy group conducted by the author. Ratings based on written responses at start of therapy were compared to ratings based on videotape interviews conducted by the author six years after termination of therapy. Moderately high inter-assessor reliability was found but intra-assessor reliability was low for the independent assessors; agreement increased for script components ‘primary injunction from father,’ ‘racket feeling’, ‘escape hatch’, ‘driver from father’ and ‘driver from mother’.</jats:p
Setacheres Borges & Neves & Johnsson 2017
No full textKey to the species of <i>Setacheres</i> <p>1 Basis of leg 1 armed with 1,0........................................................................... 2</p> <p>- Basis of leg 1 armed with 1,I............................................................................ 3</p> <p> 2 Second endopodal segment of leg 4 armed with 0,1..................................... <i>S. ventricosus</i> (Brian, 1928)</p> <p> - Second endopodal segment of leg 4 armed with 0,2..................................... <i>S. lunatus</i> (Johnsson, 1998)</p> <p> 3 Female antennule 18-segmented..................................................... <i>S. unicus</i> (Johnsson, 2001)</p> <p>- Female antennule at least 19-segmented.................................................................. 4</p> <p>4 Female antennule 19-segmented......................................................................... 5</p> <p>- Female antennule at least 20-segmented.................................................................. 8</p> <p> 5 Mandibular palp 1-segmented.................................................... <i>S. aplysinus</i> (Johnsson, 2002)</p> <p>- Mandibular palp 2-segmented........................................................................... 6</p> <p> 6 Maxilliped endopod 4-segmented................................................ <i>S. spinopaulus</i> (Johnsson, 1998)</p> <p>- Maxilliped endopod at least 5-segmented.................................................................. 7</p> <p> 7 Maxillule with 3 setae on each lobe........................................... <i>S. picinguabensis</i> (Johnsson, 2001)</p> <p> - Maxillule with 4 setae on each lobe.............................................. <i>S. abrolhensis</i> (Johnsson, 1998)</p> <p> 8 Free segment of leg 5 armed with 2 setae......................................... <i>S. paraboecki</i> (Johnsson, 1998)</p> <p>- Free segment of leg 5 armed with 3 setae.................................................................. 9</p> <p> 9 Maxilliped endopod 5-segmented.................................... <i>S. eudistomus</i> Johnsson, Bahia & Neves, 2016</p> <p> - Maxilliped endopod 6-segmented..................................................... <i>S. portobarrensis</i> <b>sp. nov.</b></p>Published as part of <i>Borges, Camila C., Neves, Elizabeth G. & Johnsson, Rodrigo, 2017, A new Setacheres (Copepoda, Siphonostomatoida, Asterocheridae) associated with Ircinia felix (Duchassaing & Michelotti) (Porifera) from Brazil, pp. 129-136 in Zootaxa 4363 (1)</i> on page 135, DOI: 10.11646/zootaxa.4363.1.6, <a href="http://zenodo.org/record/1096315">http://zenodo.org/record/1096315</a>
Client Assessment in Transactional Analysis – A Study of the Reliability and Validity of the Ohlsson, Björk and Johnsson Script Questionnaire
No full textA script questionnaire and associated checklist developed by Ohlsson, Johnsson & Björk (1992) was used by the author and two professional colleagues to independently assess ten clients of a year-long transactional analysis therapy group conducted by the author. Ratings based on written responses at start of therapy were compared to ratings based on videotape interviews conducted by the author six years after termination of therapy. Moderately high inter-assessor reliability was found but intra-assessor reliability was low for the independent assessors; agreement increased for script components ‘primary injunction from father,’ ‘racket feeling’, ‘escape hatch’, ‘driver from father’ and ‘driver from mother’
Dansande ungdom
No full textOverall view from back; Ivar Johnsson trained as a sculptor both in Sweden and abroad, becoming one of the foremost representatives of Swedish classicism in the 1920s, with his expressive yet restrained style. The youths in this sculpture seem to dance easily. Source: Wikipedia; http://en.wikipedia.org/wiki/Main_Page (accessed 5/9/2013
Setacheres Johnsson, Bahia & Neves, 2016, gen. nov.
No full textSetacheres gen. nov. Diagnosis. Asterocheridae. Body with ovoid or discoid prosome. Urosome 4 -segmented in female, 5 -segmented in male. Antennule of female with ancestral segments IX-XII fused, 19-21 -segmented, with large aesthetasc on 18 th segment and 1 to 3 distal segments, respectively. A fusion on the ancestral segments IX to XIII may be observed and the antennule will show 18 to 20 segments, with aesthetasc on 17 th segment and 1 to 3 distal segments, respectively. Antenna with 1 -segmented exopod and 3 -segmented endopod bearing distal claw or spine. Oral cone short or elongate, siphon-like. Mandible consisting of apically pointed stylet and 1 - or 2 -segmented palp bearing 2 distal setae. Maxillule bilobed. Maxilla 2 -segmented; distal segment forming claw. Legs 1-4 with 3 -segmented exopod and endopod. Basis of leg 1 with 2 elements, one on each outer and inner margins. Female armature formula of third exopodal segment III, 2,2 for leg 1, III,I, 4 or III, 1,4 for legs 2-4. Female armature formula of third endopodal segment 1,2, 3 for legs 1 to 3 or 1,1 +I, 2 for leg 4. Second endopodal segment of legs 1-4 with 2 inner setae. Free segment of leg 5 with 2 or 3 setae. Remarks. The females of Setacheres gen. nov. have a 4 -segmented urosome, a 2 -segmented mandibular palp armed with 2 distal setae, legs 1-4 with both rami 3 -segmented. The third exopodal segment of leg 1 has 7 elements and that of legs 2-4 8 elements. The third endopodal segment of legs 1-3 has 6 elements and leg 4 5 elements. These characters are shared with other asterocherid genera like Phyllocheres Humes 1996, Chelacheres Stock & Humes 1995, Asterocheres Boeck 1860, Stockmyzon Bandera & Huys 2008 and Hetairosynella Kim, 2010 (Kim 2010, Bandera & Huys 2008, Stock & Humes 1995, Humes 1996). In Chelacheres the autapomorphy is the setation of the third endopodal segment of the antenna, with two robust opposed setae forming a chela-like structure (Stock & Humes 1995). Phyllocheres shows a broad prosome, leaf-like, with the tergite of the third pedigerous somite expanded posteriorly over the rest of the prosome (Humes 1996, Boxshall & Halsey 2004). Stockmyzon has a distinctly annulated stylet on the antennule. Despite the strong resemblance between Setacheres gen. nov. and Asterocheres, the latter genus shows the third endopodal segment of leg 3 armed with 3,1 +I, 1 and the former shows 3,2, 1, as in legs 1 and 2. Such pattern on the leg 3 endopodal was relevant for Kim (2010) to use it as criteria to transfer some species originally placed in Asterocheres, to species inquirendae. Cheramomyzon Humes, 1989 is the only genus within the Asterocheridae that shows the third endopodal segment of leg 3 armed with 3,2, 1. However Johnsson & Neves (2004), when redescribing C. abyssale Humes, 1989, concluded that Cheramomyzon has many characters which are observed either in Asterocheridae or in Artotrogidae, but never on both genera, and therefore the genus should be placed within its own family. Another relevant characteristic of Setacheres gen. nov. is the presence of a distal seta instead of a spine on the third exopodal segment of legs 2 to 4 of almost all species of the new genus has not been reported in any other genus of Asterocheridae. In the revision of Asterocheres by Kim (2010), the generic diagnosis focused mainly on the female antennule and leg setation pattern. The antennule bears an aesthetasc on the 18 th segment and the distal section has 1–3 segments resulting from fusions for a total of 19–21 segments. The leg setation pattern is strict, with no variations. Consequently, 12 Asterocheres species are considered by Kim (2010) species inquirendae. Among these species, 8 of them show the third endopodal segment of leg 3 armed with two setae: Asterocheres abrolhensis Johnsson, 1998, A. aplysinus Johnsson, 2002, A. lunatus Johnsson, 1998, A. paraboecki Johnsson, 1998, A. picinguabensis Johnsson, 2001, A. spinopaulus Johnsson, 1998, A. unicus Johnsson, 2001, A. ventricosus (Brian, 1927) (Johnsson 1998, 2002, Johnsson et al. 2001, Brian 1927) and therefore should be transferred to the new genus. Etymology. The generic name Setacheres is a combination of the Latin seta (bristle) and cheres, apparently derived from the Greek achtheros meaning distressing or troublesome to. Type species. Setacheres eudistomus sp. nov.Published as part of Johnsson, Rodrigo, Bahia, Cristiano & Neves, Elizabeth, 2016, A new genus of Asterocheridae (Copepoda: Siphonostomatoida) ectoassociate of the ascidian Eudistoma vannamei Millar, 1977 (Polycitoridae) from Brazil, pp. 162-170 in Zootaxa 4114 (2) on page 164, DOI: 10.11646/zootaxa.4114.2.5, http://zenodo.org/record/26557
Magnovis Alves & Lowry & Johnsson 2020, gen. nov.
No full textMagnovis gen. nov. Type species. Magnovis elizabethae sp. nov. , monotypy. Etymology. The genus name, from Latin, magnus —big and novis - different, new, in apposition to the big length of specimens and the very different characteristics of this group in comparison to other Hadziida families. Generic diagnosis. With the characters of the superfamily.Published as part of Alves, Jessika, Lowry, James K. & Johnsson, Rodrigo, 2020, A new superfamily and family of Hadziida (Amphipoda: Senticaudata), with a description of a new genus and new species from the Brazilian continental shelf, pp. 573-583 in Zootaxa 4779 (4) on page 575, DOI: 10.11646/zootaxa.4779.4.8, http://zenodo.org/record/383955
Setacheres portobarrensis Borges & Neves & Johnsson 2017, sp. nov.
No full textSetacheres portobarrensis sp. nov. (Figs. 2–4) Material examined. Holotype adult female (UFBA 3182) and paratype adult female (UFBA 3183), Porto da Barra Beach (13°00'14.01"S, 038°32'3.14"W), Salvador city, Bahia State, Brazil, collected by C. Bahia and V. Queiroz on 4 August 2011. Both specimens found associated with Ircinia felix. Paratype (UFBA 3183) dissected and mounted on slide. Holotype preserved in ethanol. Description of female. Mean body length (excluding caudal setae) 687 µm (686–688 µm) and mean body width 393 µm (390–395 µm) (n = 2). Body (Fig. 2a) cyclopiform, dorsoventrally flattened, prosome longer than wide, urosome cylindrical. Pedigerous somite 1 completely fused with cephalothorax to form cephalosome. Pedigerous somites 2–4 with posterolateral margins not projected posteriorly and slightly rounded. Pedigerous somite 3 longer than pedigerous somite 2. Pedigerous somite 4 smaller than third somite and larger than fifth somite. Prosome 470 µm long and 386 µm wide. Length: width ratio = 1.2:1. Urosome (Fig. 2b) 4-segmented. Fifth pedigerous somite 32 µm long and 116 µm wide. Genital somite 79 µm long and maximum width 104 µm, length: width ratio = 0.7:1, vestigial leg 6 located midlaterally with thin seta, close to genital openings; setules located posteriorly to leg 6. Two postgenital somites, both wider than long (36 × 56, 38 × 55 µm, respectively), epimera directed posterolaterally; first postgenital somite armed with 2 spinules on outer margin, anal somite with 4 spinules along lateral margin. Prosome: urosome ratio = 2.2:1. Caudal rami (Fig. 2b) longer than wide, 25×22 µm. Length: width ratio 1.1:1 µm, armed with 6 setae. All setae on specimens broken. Rostrum (Fig. 2c) wider than long (72 × 224 µm), triangular with rounded apex. Antennule (Fig. 2d) 295 µm long (not including setae), 21-segmented. Lengths of segments in proximal to distal order: 35, 9, 9, 8, 9, 7, 9, 14, 10, 5, 8, 17, 20, 19, 13, 20, 23, 26, 9, 10 and 7 µm. Segmental homologies as follows: 1(I)-2; 2(II)-2; 3(III)-2; 4(IV)-2; 5(V)-2; 6(VI)-2; 7(VII)-2; 8(VIII)-2; 9(IX–XII)-6; 10(XIII)-2; 11(XIV)-I+2, 12(XV)-2; 13(XVI)-2; 14(XVII)-2; 15(XVIII)-2; 16(XIX)-2; 17(XX)-2; 18 (XXI)-2+ Aesthetasc; 19(XXII–XXIII)-3; 20(XXIV–XXV)- 1; 21(XXVI–XXVIII)-5. Aesthetasc 72 μm long. Both setae from segments 1–3 and one seta from segment 8 with sparse setules distally. Antenna (Fig. 3a) 192 µm long (including distal claw); coxa 14 µm long; basis 62 µm long with spinules along inner margin. Exopod 1-segmented, 8 µm long, with 2 apical setae and small subdistal seta; all setae naked. Endopod 3-segmented; first segment 56 µm long, unarmed, inner margin ornamented medially with row of spinules and armed distally with 3 large spinules; second segment 6 µm long, armed with single robust seta covered with setules; third segment 10 µm long, armed with 2 subdistal spiniform setae and distal claw (36 µm). Oral cone (Fig.2a) 172 × 94 µm (length × width), reaching to insertion of maxilliped bases. Mandible (Fig. 3b) with 2-segmented palp, both segments slender and naked, measuring 26 and 25 µm long, respectively; second segment with 2 naked distal setae, longer seta twice as long as shorter seta. Mandibular stylet 128 µm long, distally acuminate, posteriorly to a subterminal serrated portion with 7 teeth and triangular distal end. Maxillule (Fig. 3c) bilobed, both lobes laterally naked; inner lobe 50 µm long, with 5 naked distal setae, one seta much smaller than others. Outer lobe 18 µm long, armed with 4 naked distal setae, one more robust than the others. Maxilla (Fig.3d) 230 µm long, syncoxa 95 µm long, with small tooth-like projection on outer margin plus tubular extension of maxillary gland opening and strongly curved distally claw. Maxilliped (Fig.3e) 6-segmented, 246 µm long; syncoxa 51 µm long with naked seta on inner margin and minute tooth-like projection on outer margin; basis 90 µm long, with subdistal row of setules and 2 small rows of spinules on inner and outer margins, respectively. Endopod 4-segmented, segments measuring 22, 9, 12 and 25 µm long, respectively; first and second segments naked, third segment with naked seta; fourth segment with spiniform serrate seta, close to distal curved claw-like element 46 µm long, with spinules on inner margin approximately reaching midlength. Legs 1−4 (Figs. 4a −d) biramous, with 3-segmented rami. Armature formula as follows: coxa basis exopod endopod leg 1 0–1 1–1 I–1; I–1; III,4 0–1; 0–2; 1,2,3 leg 2 0–1 1–0 I–1; I–1; III,I,4 0–1; 0–2; 1,2,3 leg 3 0–1 1–0 I–1; I–1; III,1,4 0–1; 0–2; 1,2,3 leg 4 0–1 1–0 I–1; I–1; III,I,4 0-1; 0–2; 1,1+I,2 All legs with small spinules on outer margin of coxa, legs 2 and 3 each with a single spinule, leg 4 with 4 spinules and leg 1 with 2 rows of spinules. Legs 2 - 4 each with long setules along outer margin of endopod. Outer margins of most exopodal segments covered with small spinules. First exopodal segment of leg 1 bearing large spine reaching insertion of proximalmost spine of third exopodal segment. Second segment with tiny spine, smaller than adjacent tooth-like projection (Fig. 4a). Leg 3 with distal seta on third exopodal segment, instead of spine (Fig. 4c). Leg 4 with distal spine on third endopodal segment (Fig. 4d). Leg 5 (Fig.4e) with longer spinules on both margins, with 3 naked distal setae. Male. Unknown. Type locality. Porto da Barra Beach (13°0'14.01"S, 38°32'3.14"W), Salvador city, Bahia State, Brazil. Etymology. The name “ portobarrensis ” refers to the type locality of the new species, Porto da Barra Beach, in Salvador city, Bahia State, Brazil. Remarks. In a recent study, Johnsson et al. (2016) erected the new genus, Setacheres in order to accommodate some Asterocheres that were previously considered as species inquirendae (Kim, 2010). The main character shared by the species included in the new genus is the presence of 2 distal setae on the third endopodal segment of leg 3, instead of a seta and a spine. Considering the new species described here, the genus Setacheres now contains 10 species; they can be separated into three different groups based on the number of free segments posterior to the ancestral antennulary segment XXI, which can range from 1 to 3. Setacheres portobarrensis sp. nov. possesses a 21-segmented antennule, with 3 free segments distally, after the aesthetasc. An identical condition is observed in S. eudistomus Johnsson, Bahia & Neves, 2016 and S. lunatus Johnsson, 1998, while S. paraboecki Johnsson, 1998, despite showing 3 free distal segments, has a 20-segmented antennule, resulting from a fusion of segments in the mid-region of the antennule (Johnsson 1998; Johnsson et al. 2016). Setacheres portobarrensis sp. nov. also differs from these two Brazilian species in the third exopodal segment of leg 3, which has a distal seta (III,1,4) instead of a spine (III,I,4) (Johnsson 1 998; Johnsson et al. 2016). Some other species of the genus with the same distal pattern are S. spinopaulus Johnsson, 1998, S. unicus Johnsson, 2001, S. abrolhensis Johnsson, 1998, and S. paraboecki Johnsson, 1998 but none of them has a 21-segmented antennule (Johnsson 1998; Johnsson et al. 2001). In addition, S. portobarrensis sp. nov. shows many unique features such as: 1) spine-like setae close to the distal claw on the third endopodal segment of the antenna (arrows in Fig. 3a); 2) mandibular stylet with subterminal serrated portion and triangular distal end (arrow in Fig. 3b); 3) outer lobe of the maxillule with a very thick, claw-like bristle (arrow in Fig. 3c). Distribution. Setacheres portobarrensis, like the other known members of the genus (Johnsson et al. 2016), occurs in the Tropical Southwestern Atlantic Province (TSA) (Spalding et al. 2007), as observed for S. abrolhensis, S. lunatus, S. aplysinus, and S. spinopaulus (Johnsson & Neves 2012). Further studies may provide additional information about the range of the new species.Published as part of Borges, Camila C., Neves, Elizabeth G. & Johnsson, Rodrigo, 2017, A new Setacheres (Copepoda, Siphonostomatoida, Asterocheridae) associated with Ircinia felix (Duchassaing & Michelotti) (Porifera) from Brazil, pp. 129-136 in Zootaxa 4363 (1) on pages 131-135, DOI: 10.11646/zootaxa.4363.1.6, http://zenodo.org/record/109631
Setacheres eudistomus Johnsson, Bahia & Neves, 2016, sp. nov.
No full textSetacheres eudistomus sp. nov. (Figs. 2–4) Material examined. Holotype female (UFBA 1722) and two paratype females (UFBA 1723); (UFBA 1724), Porto da Barra Beach (13 °0'14.01"S, 38 ° 32 '3.14"W), Salvador city, Bahia State, Brazil, collected by C. Bahia and V. Queiroz on 10 December 2012. All specimens were found attached externally on the tunic of Eudistoma vannamei. Paratype (UFBA 1723) dissected and mounted on slide. Remaining types preserved in alcohol. Description of female. Mean body length (excluding caudal setae) 740 µm (736–744 µm) and mean body width 431 µm (428–434 µm) (n = 3). Body (Fig. 2 A) cyclopiform, dorsoventrally flattened, prosome longer than wide, and urosome cylindrical. Pedigerous somite 1 completely fused to cephalosome to form cephalothorax. Pedigerous somites 2–4 with lateral posterior margins rounded. Pedigerous somite 3 more curved, longer than pedigerous somite 2 and partly covering pedigerous somite 4. Pedigerous somite 4 smaller than third somite and slightly larger than fifth somite. Prosome 511 µm long and 431 µm width. Length: width ratio = 1.2: 1. Urosome (Fig. 2 B) 4 -segmented. Fifth pedigerous somite 43 µm long and 113 µm width. Genital double-somite 86 µm long, maximum width 102 µm, length: width ratio = 0.8: 1. Vestigial leg 6 mid-laterally located, close to spinule; row of setules along posterolateral margins and two tooth-like projections close to genital openings. Two postgenital somites, both wider than long (36 × 59, 36 × 54 µm, respectively), lateral margins naked; epimera postero-laterally pointed. Ventral surface of anal somite covered by spinules. Prosome: urosome ratio = 2.5: 1. Caudal rami (Fig. 2 B) slightly longer than wide, 27 × 25 µm with spinules along inner margin, with six setae (seta I absent); setae VI and VII naked and setae IV and V plumose. Posterior margin with rounded projection between setae III and IV. Length of setae II–VII 45, 125, 186, 245, 80 and 42 µm, respectively. Rostrum (Fig. 2 C) large, wider than long (234 × 145 µm), triangular with rounded apex. Antennule (Fig. 2 D) 300 µm long (not including setae), 21 -segmented. Length of segments: 34, 17, 8, 8, 11, 5, 11, 7, 11, 4, 13, 13, 19, 20, 17, 20, 24, 27, 12, 13 and 6 µm, respectively. Segmental homologies and armature as follows: 1 (I)- 2; 2 (II)- 2; 3 (III)- 2; 4 (IV)- 2; 5 (V)- 2; 6 (VI)- 2; 7 (VII)- 2; 8 (VIII)- 2; 9 (IX–XII)- 6; 10 (XIII)- 2; 11 (XIV)- 2; 12 (XV)- 2; 13 (XVI)- 2; 14 (XVII)- 2; 15 (XVIII)- 2; 16 (XIX)- 2; 17 (XX)- 2; 18 (XXI)- 2 + aesthetasc; 19 (XXII–XXIII)- 2; 20 (XXIV–XXV)- 2; 21 (XXVI–XXVIII)- 6. Aesthetasc 64 Μm long. First segment with both setae plumose at distal half. Segments 9-11 with distal tooth-like projection. Antenna (Fig. 3 A) 211 µm long (including distal claw); coxa 25 µm long, with small seta along outer margin; basis 54 µm long, with sparse spinules along inner margin and setules along outer margin. Exopod 1 -segmented, 11 µm long, with two apical setae and small lateral seta; all setae naked. Endopod 3 -segmented; first segment 59 µm long, unarmed; second segment 9 µm long, armed with naked seta; third segment 12 µm long, armed with two distal setae, small seta proximally and distal claw (52 µm long). Oral cone (Fig. 3 B) 162 × 61 µm (long × width), reaching to point between bases of maxillipeds and leg 1. Mandible (Fig. 3 C) with 2 -segmented palp; both segments slender and naked, measuring 18 and 13 µm long, respectively; second segment with two distal setae, smallest seta spinulated and half the length of longer one which is unilaterally spinulated. Mandibular stylet 122 µm long, proximally stout, tapering distally with ten subterminal teeth. Maxillule (Fig. 3 D) bilobed; inner lobe 36 µm long, with five distal setae, one of them smaller and more slender than the others; three of the remaining setae unilaterally plumose; inner margin of inner lobe with setules proximally and bunch of setules distally; outer margin with set of spinules. Outer lobe 13 µm long, armed with four distal setae, two being plumose; outer margin with few spinules. Maxilla (Fig. 3 E) 250 µm long, consisting of syncoxa (100 µm long, with tubular extension of maxillary gland opening) and strongly distally curved claw with naked seta near inner subdistal margin. Maxilliped (Fig. 2 F) 5 -segmented, 267 µm long; syncoxa 82 µm long, with setules along outer margin; basis 84 µm long, with row of setules and few setules along inner and outer margins, respectively. Endopod 3 - segmented, segments measuring 8, 11 and 21 µm, respectively; first segment naked; second one with distal toothlike projection and two naked setae; third segment with serrated spine and distal curved claw-like element, 61 µm long. Legs 1–4 (Fig. 4 A −D) biramous, with 3 -segmented rami. Armature formula as follows: Leg 1 with setules along outer margin of exopod and endopod; proximal exopod segment with large outer spine and without inner seta; middle exopod segment with small outer spine. Legs 2–4 with spinules and setules along outer margins of exopods and endopods, respectively. Leg 5 (Fig. 4 E) with three distal setae, with spinules and setules along outer and inner margins, respectively. Intercoxal plate of leg 1 covered with setules, intercoxal plates of remaining legs totally naked. Male. Unknown. Type locality. Porto da Barra Beach (13 °0'14.01"S, 38 ° 32 '3.14"W), Salvador city, Bahia State, Brazil. Etymology. The specific name “ eudistomus ” refers to the ascidian host of the new species. Remarks. Among the species belonging to the new genus Setacheres it is recognizable the presence of one to three segments posteriorly to the ancestral antennulary segment XXI indicating their degree of fusion (Johnsson 1998, Brian 1927, Johnsson et al. 2001, Johnsson 2002). Setacheres eudistomus sp. nov. shows, as observed in S. lunatus and S. paraboecki, 3 segments posterior to the ancestral XXI (Johnsson 1998). However, in S. paraboecki the ancestral segments IX-XIII are fused and therefore show a total of 20 segments while S. lunatus and the new species share the fusion of articles IX-XII resulting in a 21 -segmented antennule. Setacheres eudistomus sp. nov. differs from S. lunatus in its having of 5 setae on the inner maxillulary lobe, instead of 4 in the latter species and a 5 -segmented maxilliped vs. a 6 -segmented one in S. lunatus (Johnsson 1998). The new species shows the first exopodal segment of leg 1 without an inner seta (I-0) while all other species of the new genus shows the regular setation pattern with an inner seta (I- 1). Distribution. The nine species of Setacheres gen. nov. are recorded exclusively from the Atlantic Ocean. Setacheres ventricosus is known from the Aegean Sea, an embayment of the Mediterranean Sea. The remaining eight species have been recorded exclusively from the western Atlantic; most of them are so far restricted to the Brazilian coast. Setacheres picinguabensis is known to occur in São Paulo State, Warm Temperate Southwestern Atlantic province (WTSA) and S. abrolhensis in Bahia State (Johnsson & Neves 2012), Tropical Southwestern Atlantic province (TSA) (Spalding et al. 2007). Three species, S. lunatus, S. aplysinus and S. spinopaulus are restricted to the northeastern coast, occurring in Bahia, Pernambuco and Alagoas States (Johnsson & Neves 2012), all in TSA (Spalding et al. 2007). Setacheres paraboecki and S. unicus are the only species recorded in Rio de Janeiro and Bahia States and São Paulo and Alagoas, respectively and therefore occur in both WTSA and TSA provinces. As S. paraboecki is also recorded from Cuba (Varela 2012), this species ranges in two distinct biogeographic realms, the Tropical Atlantic and the Temperate South America, thus suggesting a wide distributional range than that known in other species as S. unicus. So far, the remaining six species appear to be restricted to the TSA province. These data corroborate the distributional similarity found in other organisms as stony corals, decapods, mollusks and polycladids (Neves et al. 2006, Neves et al. 2008, Neves et al. 2010, Queiroz et al. 2011, Queiroz et al. 2013, Sales et al. 2011).Published as part of Johnsson, Rodrigo, Bahia, Cristiano & Neves, Elizabeth, 2016, A new genus of Asterocheridae (Copepoda: Siphonostomatoida) ectoassociate of the ascidian Eudistoma vannamei Millar, 1977 (Polycitoridae) from Brazil, pp. 162-170 in Zootaxa 4114 (2) on pages 165-168, DOI: 10.11646/zootaxa.4114.2.5, http://zenodo.org/record/26557
Magnovidae Alves, Lowry & Johnsson 2020, fam. nov.
No full textMagnovidae fam. nov. Diagnosis. With the characters of the superfamily. Etymology. The family name is based on the type genus Magnovis. Remarks. The Magnovidae is distinct from all other hadziidan families in having, among other characters, antenna 1 shorter than the peduncle of antenna 2, a molar dominating the mandible and well-developed basofacial setae on the peduncle of uropod 1. Buccal appendages are morphologically similar to calliopioidean amphipods, such as Membrilopus Barnard & Karaman, 1987 and Regalia K.H. Barnard, 1930. Moreover, in the Magnovidae fam. nov. the rami of uropod 3 are subequal in length and longer than peduncle, an apomorphic character state of the family Maeridae, but the shape of rami are strongly ovate, with many long marginal setae, a character state which dominates the Hadziida. Several characteristics such as: (1) pilose antenna 2 cone gland; (2) the presence of slender and long setae on appendages; (3) significant reduction of carpus and propodus in pereopods 3–7; (4) and strong sexual dimorphism are also powerful apomorphies distinguishing the Magnovidae. Magnovidae is similar to Cheirocratidae and Megaluropidae in that all three families share a very short antenna 1, shorter than the peduncle of antenna 2. But cheirocratids do not have basofacial robust setae on uropod 1. Magnovids do not have dorsal spines on the urosomites. In addition, megaluropids have a normal molar, maxilla 2 with an oblique setal row on the inner plate, and very long seventh pereopods.Published as part of Alves, Jessika, Lowry, James K. & Johnsson, Rodrigo, 2020, A new superfamily and family of Hadziida (Amphipoda: Senticaudata), with a description of a new genus and new species from the Brazilian continental shelf, pp. 573-583 in Zootaxa 4779 (4) on pages 574-575, DOI: 10.11646/zootaxa.4779.4.8, http://zenodo.org/record/383955
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