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Cymadusa cavimana Appadoo & Myers 2004, n.comb.
No full textCymadusa cavimana (Sivaprakasam) n.comb. Ampithoe cavimana Sivaprakasam 1970b: 65, fig. 1.— Ledoyer 1982: 116, fig. 37.—Appadoo & Steele, 1998: 639. Material examined. 13, 5♀♀, 2 juv., AM P60625, 733, 10♀♀, 16 juv., AM P60626, from Turbinaria ornata, Pocockiella variegata, Balaclava (20°3.7'S 57°30.7'E), 10 September 1998; 333, 5♀♀, 12 juv., AM P60627, from Halodule uninervis, Dictyota divaricata, coral rubble, Albion (20°13'S 57°23.7'E), 22 October 1998; 233, 2♀♀, 14 juv., AM P60628, from Padina sp., Dictyota divaricata, Gelidium sp., Klondike (20°15.7'S 57°22'E), 9 November 1998; 433, 12♀♀, 4 juv., AM P60629, from Amansia glomerata, Padina sp. and Sargassum sp., Souillac, 8 April 1999; 13, 2♀♀, AM P60630, from Padina sp., Ulva lactuca, Amphiroa sp., Tamarin (20°19.5'S 57°22'E), 2 August 1999; 433, 6♀♀, 5 juv., AM P60631, from Digenia simplex and Padina sp., Roches Noires (20°6.2'S 57°44.5'E), 15 October 1999. Diagnosis. Eyes medium in size with well-developed ommatidia.Antenna 1 accessory flagellum absent. Antenna 2 poorly setiferous, article 5, 0.8× article 4. Gnathopod 1 coxa 1.4× as broad as deep, anterodistal margin strongly produced and rounded; carpus elongate, 2.8× as long as broad weakly setiferous; propodus 0.75× length of carpus, palm oblique, with a deep, triangular excavation, posterodistal corner with 1 robust seta; dactylus overlapping palm, inner margin toothed. Gnathopod 2 coxa 1.5× as long as broad with a patch of slender setae at posterodistal corner; carpus subtriangular, as long as broad; propodus 1.7× as long as broad, palmar margin with a deep round-bottomed excavation, palmar margin with a few short slender setae; dactylus short, robust, inner margin with a rounded serrated lobe terminating in a tooth-like process. Epimera 2–3 with a small tooth at posterodistal corner. Uropod 1 peduncle distal margin with a well-developed acute interramal process. Uropod 3 peduncle with robust setae on distal margin. Telson subtriangular, distally truncate. Female, Gnathopod 1 coxa 1.2× as long as broad, anterodistal margin moderately produced; carpus 1.9× as long as broad; propodus palm oblique. Gnathopod 2 propodus palm oblique evenly rounded; dactylus slightly overlapping palm. Type locality. Gulf of Mannar, India. Distribution. Madagascar, Mauritius, India. Habitat. This species was collected at depths of less than 1 m. It occurred mostly on brown algae such as Padina sp. and Pocockiella variegata, together with coral rubble. It was abundant at sites such as Flic-en-Flac, Balaclava, Roches Noires, La Prairie, sites where coral rubble and brown algae are abundant. Remarks. This species is here transferred from the genus Ampithoe Leach to the genus Cymadusa Savigny on the basis of the presence of a large acute distoventral interramal process on uropod 1 (see Poore & Lowry, 1997) and its large size. Cymadusa cavimana from Mauritius agrees well with the description given by Sivaprakasam (1970b). This species is often confused with Cymadusa brevidactyla, but differs from that species in having an excavation in the male gnathopod 1 palm (smoothly convex in C. brevidactyla) and in lacking an accessory flagellum. The presence of only one patch of slender setae at the posterodistal margin of coxae 1–4 help to distinguish this species from C. filosa which has setae all along the distal margin of these coxae. The short dactylus on the male gnathopod 2 distinguishes males of this species from Cymadusa microphthalma (Chevreux).Published as part of Appadoo, C & Myers, A. A., 2004, Corophiidea (Crustacea: Amphipoda) from Mauritius, pp. 331-362 in Records of the Australian Museum 56 (3) on page 34
Ceradocus oliveri Appadoo & Myers, 2006, sp. nov.
No full textCeradocus oliveri sp. nov. Figures 7–9 Type material. HOLOTYPE. Male, 4.1 mm from Passe Ile des fou (19 ° 39.527 ' S63 23.752 ' E), Rodrigues, on reef crest among rhodolite samples, G. Oliver, 12 September 2001, AM P 73603. PARATYPES. 1 male, 4.5 mm, AM P 73605, 1 female, 5.1 mm, AM P 73604, 1 male, AM P 73606; 10 males, 1 female and 4 juveniles same data as holotype. 1 male from Grande Pate (19 ° 39.307 'S, 63 ° 24.950 'E), Rodrigues, on dead coral head, 29 September 2001. Description. Male, 4.1 mm. Head with subocular notch, eyes with discrete ommatidia. Antenna 1 article 2 subequal to article 1; article 3, 0.25 x article 1; accessory flagellum 5 -articulate. Antenna 2, peduncle article 5, 0.8 x article 4; flagellum 8 -articulate. Mandible palp, 3 -articulate, article 1 distally produced, article 2, 3x article 1, article 3, 0.3 x article 2 with distal patch of setae of long slender setae. Gnathopod 1 coxa 1.3 x as long as broad, antero-distal margin produced; basis 2.8 x as long as broad; propodus 1.1 x carpus, 2 x as long as broad, palm oblique. Gnathopod 2 asymmetrical. Gnathopod 2 (small) coxa 1.4 x as broad as long; basis 3 x as long as broad; carpus 1.7 x as long as broad; propodus slender 2.8 x as long as broad, palm oblique, palmar margin with slender setae. Gnathopod 2 (large), coxa 1.1 x as long as broad, basis 2.9 x as long as broad; carpus triangular in shape, propodus robust, 1.4 x as long as broad; palmar margin transverse characterised by three shallow protuberances, and a well-developed protuberance; palmar margin with few short slender setae, postero-distal corner of palmar margin produced; dactylus fitting palm. Pereopod 3, coxa as long as broad, basis 3.6 x as long as broad, propodus 1.5 x carpus, dactylus outer margin weakly toothed. Pereopod 4 similar to pereopod 3. Pereopod 5 coxa bilobed, basis 2.5 x as long as broad, propodus 1.3 x carpus; dactylus margins smooth. Pereopod 6 basis 2.7 x as long as broad, postero-distal margin weakly produced into a lobe, propodus 1.3 x carpus; dactylus slender. Pleonites 1-2 dorsal margin weakly toothed. Pleonite 3, with 9 teeth. Epimera 1-3 with a tooth on distal margin; Epimeron 1 and Epimeron 2, postero-distal corner weakly produced; Epimeron 3 postero-distal margin strongly produced. Urosomite 1 with two dorsal teeth. Uropod 1 peduncle with robust setae on outer margin, outer ramus 1.1 x inner ramus, 0.9 x peduncle. Uropod 2 outer ramus 1.1 x inner ramus, 1.3 x length of peduncle. Uropod 3, rami subequal, lanceolate, 2.3 x peduncle. Telson (see female). Female. 5.1 mm, same collection site as described for male. Gnathopod 1 coxa 1.4 x as long as broad, antero-distal corner produced; basis 2.8 x as long as broad; propodus 1.1 x length of carpus, 2 x as long as broad, palm oblique. Gnathopod 2 (small) coxa 0.7 x as long as broad; basis 2.3 x as long as broad; carpus 1.4 x as long as broad; propodus 1.9 x as long as broad, 1.75 x length of carpus; palmar margin oblique with a weak excavation on the postero-distal corner. Gnathopod 2 (large) coxa 1.2 x as long as broad; basis 2.4 x as long as broad; carpus triangular, 2.4 x as broad as long; propodus robust, 1.4 x as long as long as broad, palmar margin similar to male. Telson (from female), cleft to 70 % its length, telsonic lobes produced and characterised by robust setae 1.1 x length of telson. Remarks. The material from Rodrigues resembles C. hawaiensis J. L. Barnard (1955, 1970) in having a transverse and toothed palm in the larger gnathopod 2 and the toothed dactyls of pereopods. However, Ceradocus oliveri differs from C. hawaiensis in epimeron 3, which is not drawn into a point and lacks a serrated posterior margin, while in C. hawaiensis epimeron 3 is drawn out into a point and it has strongly serrated posterior margin. Moreover, in C. hawaiensis uropod 3 rami are more slender and elongate, and the telson has 2–3 as opposed to 3–4 robust setae. Distribution. Madagascar, Mauritius, Rodrigues, Lizard Island, Hawaii. Etymology. Named after the Collector, Graham Oliver, from National Museum ofPublished as part of Appadoo, Chandani & Myers, Alan A., 2006, Melitids (Crustacea: Amphipoda) of the genera Ceradocus and Mallacoota from Rodrigues Island (Indian Ocean), pp. 1-22 in Zootaxa 1370 on pages 10-12, DOI: 10.5281/zenodo.17488
Ceradocus oliveri Appadoo & Myers 2006
No full textCeradocus oliveri Appadoo & Myers, 2006 Ceradocus oliveri Appadoo & Myers, 2006: 10, figs 7–9.— Krapp-Schickel & Vader, 2009: 2061 –2065 (key). Material examined. Queensland: 1 specimen, AM P.75609, outer reef, north of Third Lagoon, One Tree Island (23°29′05″S 152°04′07″E), 10 m, dead coral, Halimeda sp. and red algal tufts, 29 October 2006, coll. I. Takeuchi and J.K. Lowry (QLD 2003); 3 specimens, AM P.75608, Steve’s bommie, outer reef, near Two Trees Islet, One Tree Island (23°29′04″S 152°05′27″E), 13 m, coral rubble with epiphytes and solitary ascidians, 27 October 2006, coll. L.E. Hughes and J.K. Lowry (QLD 1978); 2 specimens, AM P.75703, Steve’s bommie, outer reef, near Two Trees Islet, One Tree Island (23°29′04″S 152°05′27″E), 13 m, red coralline algae with epiphytes, Dictyota sp. and Halimeda sp., 27 October 2006, coll. L.E. Hughes and J.K. Lowry (QLD 1977); 1 specimen, AM P.75607, northwest corner of Goodes Island, Torres Strait (10°33′35″S 142°09′09″E), 7.8 m, dead coral like Tubipora musica, 29 September 2006, coll. M. Capa and L.E. Hughes (QLD 1874); 1 specimen, AM P.75606, Northwest Islet, Torres Strait (10°18′55″S 142°05′26″E), 4.8 m, dead coral branches, 1 October 2006, coll. M. Capa and L.E. Hughes (QLD 1920). Type locality. Rodrigues Island, on reef crest among rhodolite samples (19°39.527′S 63°23.752′E). Remarks. Material reported here extends the distribution of C. oliveri from Rodrigues in the Indian Ocean to the Coral Sea, northern Queensland. Distribution. Indian Ocean: Rodrigues (Appadoo & Myers 2006). Australia. Queensland: Lizard Island, Torres Strait (current study).Published as part of Hughes, Lauren E., 2016, New genera, species and records of Maeridae from Australian Waters: Austromaera, Ceradocus, Glossomaera, Hamimaera, Huonella gen. nov., Linguimaera and Maeraceterus gen. nov. (Crustacea: Amphipoda), pp. 1-81 in Zootaxa 4115 (1) on page 16, DOI: 10.11646/zootaxa.4115.1.1, http://zenodo.org/record/25553
A new genus and species of sand-hopper, Mauritiorchestia fayetta gen. nov., sp. nov (Amphipoda, Talitridae) from Mauritius
No full textGreen, M.A.A., Appadoo, C., Lowry, J.K., Myers, A.A. (2021): A new genus and species of sand-hopper, Mauritiorchestia fayetta gen. nov., sp. nov (Amphipoda, Talitridae) from Mauritius. Zootaxa 5068 (2): 295-300, DOI: https://doi.org/10.11646/zootaxa.5068.2.
Ceradocus cotonensis Appadoo & Myers 2006
No full textCeradocus cotonensis Appadoo & Myers, 2006 Ceradocus cotonensis Appadoo & Myers, 2006: 7, figs 4–6.— Krapp-Schickel & Vader, 2009: 2061 –2065 (key). Material examined. Queensland: 1 specimen, AM P.75601, channel on western side, One Tree Island (23°30′12″S 152°05′19″E), 2 m, coral rubble, 28 October 2006, coll. I. Takeuchi and L.E. Hughes (QLD 1988); 11 specimens, AM P.75600, outer reef, north of Third Lagoon, One Tree Island (23°29′05″S 152°04′07″E), 18 m, green alga Caulerpa sp. and coral rubble, 27 October 2006, coll. I. Takeuchi and J.K. Lowry (QLD 1981); 1 specimen, AM P.75698, Northwest Islet, Torres Strait (10°18′55″S 142°05′26″E), 4.9 m, coral rubble, 1 October 2006, coll. L.E. Hughes and M. Capa (QLD 1915). Western Australia, 1 specimen, AM P.83819, Bird Rock, Cygnet Bay, Cape Leveque (16°29′05″S 123°00′35″E), 9.8 m, coral rubble and dead mussels, 26 May 2010, coll. K.B. Attwood (MI WA 1133); 2 specimens, AM P.83818, Riddell Point, Cygnet Bay, Cape Leveque (16°27′60″S 123°01′42″E), 9.9 m, rubble with red coralline algae and sponge, 25 May 2010, coll. K.B. Attwood (MI WA 1126); 1 specimen, AM P.83817, Shenton Bluff, Cygnet Bay, Cape Leveque (16°28′38″S 123°02′38″E), 5.1 m, coral rubble with calcareous green alga Halimeda sp., 22 May 2010, coll. K.B. Attwood (MI WA 1076); 1 specimen, AM P.83508, Tish Point, Rosemary Island, Dampier Archipelago (20°29′40″S 116°35′54″E), intertidal, under rocks, 30 August 1999, coll. R.A. Peart (WA 681); 1 specimen, WAM C46387, Cassini Island, The Kimberley (13°56'4"S 125°38'16″E), 12 m, 18 October 2010, coll. Lee Paterson, Woodside Kimberley Survey 2010 (39/K10-T2); 1 specimen WAM C59001, Long Reef, The Kimberley (13°55'17"S 125°43'57"E), 12 m, 19 October 2010, coll. Lee Paterson, Woodside Kimberley Survey 2010 (43/K10-Q2). Type locality. Pointe Coton, Rodrigues Island, Indian Ocean (19°49.996′S 63°29.883′E). Remarks. Material studied here extends the distribution of C. cotonensis from Mauritius across tropical northern Australia. Distribution. Indian Ocean: Rodrigues Island (Appadoo & Myers 2006). Australia. Queensland: One Tree Island (current study). Western Australia: Cape Leveque; Dampier Archipelago; The Kimberley (current study).Published as part of Hughes, Lauren E., 2016, New genera, species and records of Maeridae from Australian Waters: Austromaera, Ceradocus, Glossomaera, Hamimaera, Huonella gen. nov., Linguimaera and Maeraceterus gen. nov. (Crustacea: Amphipoda), pp. 1-81 in Zootaxa 4115 (1) on pages 13-14, DOI: 10.11646/zootaxa.4115.1.1, http://zenodo.org/record/25553
Ampithoidae Boeck 1871
No full textFamily Ampithoidae <p>Ampithoids are corophioidean amphipods characterized by a notched outer lobe of lower lip and/or uropod 3 outer ramus with 2 recurved robust setae.</p> <p>Poore & Lowry (1997) give comprehensive diagnoses of the genera of ampithoids.</p>Published as part of <i>Appadoo, C & Myers, A. A., 2004, Corophiidea (Crustacea: Amphipoda) from Mauritius, pp. 331-362 in Records of the Australian Museum 56 (3)</i> on page 33
Dulichiella cuvettensis Appadoo & Myers 2005
No full textDulichiella cuvettensis Appadoo & Myers, 2005 (Figs 17–18) Dulichiella appendiculata. – Ledoyer, 1986: 187, fig. 9 (Mau). Dulichiella cuvettensis Appadoo & Myers, 2005: 225, fig. 4. Type material. Holotype male, 5 mm, AM P67233, La Cuvette, Mauritius (20°00'S 57°34'12"E), Sargassum sp., 1 m, C. Appadoo, 12 October 1999. Paratypes 3 specimens (1 female, 7 mm, 2 males, AM P67234), Bain Boeuf, Mauritius (19°59'S 57°36'E), Sargassum sp. and Pocockiella variegata, 1 m, C. Appadoo, 12 October 1999. Type locality. Among Sargassum sp., La Cuvette, Mauritius (20°00'N 57°34.2'E). Description. Based on holotype male, 5 mm, AM P67233 and paratype female, 7 mm, AM P67234. Body small. Head eyes round; lateral cephalic lobe broad, truncated, anteroventral corner with slender setae. Antenna 1 peduncular article 1 shorter than article 2, with 3 robust setae along posterior margin. Antenna 2 peduncular article 4 subequal to article 5. Mandibular palp article 1 about twice as long as broad, inner margin article 1 produced distally; article 2 shorter than article 3. Gnathopod 1 coxa anteroventral corner not produced, anterior margin straight, posteroventral corner notch present; carpus longer than propodus; propodus small, linear, palm straight, defined by posterodistal corner, with posterodistal robust setae. Gnathopod 2 coxa posteroventral corner notch present; (larger) propodus distolateral crown with 4 rounded spines, palm sinusoidal, posterodistal corner produced, slightly upturned, dactylus fitting against corner; dactylus apically blunt; (smaller) merus with sharp posteroventral spine; palm straight, margin without robust setae, corner with robust setae; with 1 or 2 setae on anterior margin. Pereopod 4 dactylar unguis anterior margin with 2 accessory spines. Pereopods 6 basis and merus without bunches of long slender setae (distal articles unknown). Pereopod 7 unknown. Pleonite/urosomite dorsal spine formula (7-7-7-5-4-2). Pleonites 1–3 with sparse dorsal setae. Epimeron 1 posteroventral corner with small acute or subacute spine. Epimeron 2 posteroventral corner acute. Epimeron 3 posteroventral margin smooth. Urosomite 1 with spine at midline, no conspicuous medial gape. Urosomite 2 with two groups of 1–3 small dorsolateral robust setae. Urosomite 3 without dorsal setae; with 2 dorsal spines. Uropod 3 outer ramus very long, about 2 x peduncle. Telson with dorsal robust setae. Female (sexually dimorphic characters). Gnathopod 2 subequal in size, similar to smaller gnathopod 2 of male; palm concave; dactylus posterior margin crenulate. Pereopod 7 basis expanded, posterior margin slightly convex, tapering distally. Habitat. Marine epibenthic, living on mixed algae such as Padina, Pocockiella, Sargassum, Turbinaria and Ulva, intertidal. Remarks. Dulichiella cuvettensis has four spines on the distolateral crown of male gnathopod 2 and a 7- 7-7-5-4-2 pleonite/urosomite formula. Four other species share these characters: the Atlantic species D. appendiculata and D. lecroyae, the Red Sea species D. fresnelii and the South Pacific species D. pacifica. Dulichiella cuvettensis is most similar to D. fresnelii and D. pacifica. It differs from both of these species in having two accessory spines on the dactyli of pereopods 5 and 6 and presumably pereopod 7 and in lacking bunches of long, slender setae on any articles of male pereopod 6 and presumably 7. Pereopod 7 is missing in all specimens of D. cuvettensis available to us. The state of the pereopod is presumed based on the character consistency in other species. Dulichiella cuvettensis is further distinguished from D. pacifica by the corner of the male gnathopod 1 palm which is subquadrate in D. cuvettensis and rounded in D. pacifica. Dulichiella cuvettensis can be distinguished from the Atlantic species, D. appendiculata and D. lecroyae by the longer mandibular palp article 3 and the dactyli of the pereopods which have two accessory spines in D. cuvettensis and only 1 accessory spine each in the two Atlantic species. Distribution. Mauritius. La Cuvette, Bain Boeuf and Grand Baie, Indian Ocean (Appadoo & Myers, 2005).Published as part of Published, First, 2007, A revision of the tropical / temperate amphipod genus Dulichiella Stout, 1912, and the description of a new Atlantic genus Verdeia gen. nov. (Crustacea: Amphipoda: Melitidae), pp. 1-62 in Zootaxa 1424 on pages 24-2
Mauritiorchestia Green & Appadoo & Lowry & Myers 2021, gen. nov.
No full textMauritiorchestia gen. nov. Type species. Mauritiorchestia fayetta sp. nov. Included species. Mauritiorchestia is currently monotypic. Category. Mascupod. Ecological type. Sand-hopper. Etymology. A compound noun derived from the name of the country and the name of a related genus. Diagnostic description ( male ). Head. Antenna 1 short, not reaching midpoint of peduncular article 5 of antenna 2. Antenna 2 peduncular articles incrassate . Mandible left lacinia mobilis 5-cuspidate. Maxilla 1 palp absent . Labium without inner lobes. Maxilliped palp article 2 with distomedial lobe; article 4 fused with article 3. Pereon. Gnathopod 1 sexually dimorphic; subchelate; coxa much smaller that coxa 2; posterior margin of carpus and propodus each with lobe covered in palmate setae; propodus anterior margin with 4 groups of robust setae, ‘subtriangular’ with well-developed posterodistal lobe, palm transverse; dactylus simplidactylate. Gnathopod 2 sexually dimorphic; subchelate; propodus palm acute, rounded distally and sinuous, with small to large midpalmar sinus, without proximal sinus, without large distal sinus, without proximal spine or thumb defining palm; without large projection near dactylar hinge; dactylus not modified distally, blunt, fitting into sulcus internally. Pereopods 3–5 cuspidactylate, 6–7 simplidactylate. Pereopod 4 significantly shorter than pereopod 3; carpus significantly shorter than that of pereopod 3; dactylus amplidactylate, thickened proximally with notch midway along posterior margin. Pereopod 6 subequal in length to pereopod 7; not sexually dimorphic; basis moderately expanded; male merus expanded, carpus not expanded. Pereopod 7 not sexually dimorphic; basis broadly expanded, posterior margin smooth or minutely serrate margin without setae, posterodistal lobe present, rounded, produced downwards almost to merus; merus expanded distally, subtriangular, anterior margin slightly straight; carpus expanded, subrectangular, slightly shorter than propodus; propodus slender. Pleon. Pleopods 1–3 all well-developed. Uropod 1 peduncle distolateral robust seta absent; exopod without marginal robust setae; endopod with marginal robust setae in 1 row. Uropod 2 exopod without marginal robust setae; endopod with marginal robust setae in 1 row. Uropod 3 ramus subequal in length to peduncle. Telson completely cleft, with 6 robust setae per lobe. Remarks. Mauritiorchestia is a distinctive Indian Ocean genus. Based on an incrassate second antenna, gnathopod 1 with palmate lobes on the carpus and propodus and uropod 1 exopod without marginal robust setae, it is most similar to the north-western Pacific genus Sinorchestia Miyamoto & Morino, 1999 and the wide-ranging genus Platorchestia Bousfield, 1982. Sinorchestia differs significantly from Mauritiorchestia in having a ventral plate on the third peduncular article of antenna 2, a parachelate first gnathopod and a large posteroproximal sinus on the dactylus of gnathopod 2. Platorchestia differs from Mauritiorchestia mainly in having a cuspidactylate first gnathopod and the exopod of uropod 2 with marginal robust setae in one row. Distribution. Mauritius, Western Indian Ocean.Published as part of Green, M. A. A., Appadoo, C., Lowry, J. K. & Myers, A. A., 2021, A new genus and species of sand-hopper, Mauritiorchestia fayetta gen. nov., sp. nov (Amphipoda, Talitridae) from Mauritius, pp. 295-300 in Zootaxa 5068 (2) on pages 296-297, DOI: 10.11646/zootaxa.5068.2.9, http://zenodo.org/record/570443
Mauritiorchestia fayetta Green & Appadoo & Lowry & Myers 2021, sp. nov.
No full textMauritiorchestia fayetta sp. nov. (Figs 1, 2) Platorchestia fayetta Beeltah & Appadoo, 2017: 44 (nomen nudum). Material Examined. HOLOTYPE, 1 male, 9.8 mm from Poste la Fayette (20°8.2’S, 57°44.5’E), Mauritius, on coastal sandy substrate with huge amount of beach wrack algae, A. Green, (20 November 2014), NHM/ 2021/01/01. PARATYPES: 1 female, 8.6 mm, NHM/ 2021/02/01, other paratypes; 3 males NHM/ 2021/03/01, 5 females NNHM / 2021/04/01, same data as holotype; 6 females, 4 males, same data as holotype, author’s (CA) collection, Mauritius. Etymology. Named after the type locality Poste la Fayette. Description. Male holotype, length. 9.8 mm. Body laterally compressed. Head height equal to length. Eyes medium sized round. Antenna 1 shorter than peduncle of antenna 2; peduncular article 2 longer than peduncular article 1; not geniculate; flagellum with 5 articles and a small terminal article. Antenna 2 incrassate, longer than antenna 1; not geniculate; peduncular articles broad and long with sparse, small and robust setae; peduncular article 2 longer than peduncular article 1; flagellum longer than peduncle, 13 articles and a small terminal article. Mandible palp absent; left lacinia mobilis 5 cuspidate; incisor 5 dentate; setal row with 4 plumose setae. Maxilla 1 palp absent; inner plate with setae on margin and two strong apical plumose setae; outer plate with 7 strong medially serrate robust setae. Maxilla 2 inner plate with round distal margin with one strong, long plumose seta on lateral margin; outer plate with round distal margin with especially long setae on apex and fine setae on lateral margin. Maxilliped palp with 3 well developed articles, article 4 vestigial, visible only from ventral view. Lower lip with narrow lobes and wide shoulders; apical setal tuft present. Gnathopod 1 sexually dimorphic; subchelate; palmate lobe present on posterior margin of carpus and propodus; propodus subtriangular; palm transverse; dactylus as long as palm, triangular, thick. Gnathopod 2 sexually dimorphic; subchelate; larger and more robust than gnathopod 1; coxa as long as wide; basis broad; carpus triangular; propodus massive, with anterior margin convex, palm sinuous, notch in the middle of palm, row of marginal setae on palm; dactylus as long as palm, inner face with minute robust setae on margin; dactylus fitting into sulcus internally. Coxae 2–4 as long as broad. Pereopod 3 longer than pereopod 4; cuspidactylate. Pereopod 4 cuspidactylate with a thick dactylus compared to pereopod 3. Pereopod 5 shorter than pereopod 6; coxa bilobate with small robust setae on each lobe; propodus longer than carpus; cuspidactylate. Pereopod 6 not sexually dimorphic, coxa weakly serrate; merus, carpus and propodus all broadened, propodus longer than carpus, homosimplidctylate. Pereopod 7 posterior distal margin of basis serrate; merus and carpus subrectangular; homosimplidactylate. Uropod 1 biramous; 16 robust setae in two rows on peduncle; exopod 0.7 x as long as peduncle; endopod with 5 setae on inner margin; exopod without marginal robust setae. Uropod 2 biramous; inner margin of peduncle with 3 robust setae; exopod 0.8 x as long as peduncle; rami subequal in length, inner margin of endopod with 3 robust setae; exopod without marginal robust setae Uropod 3 uniramous; ramus 0.9 x as long as peduncle; peduncle with 4 robust setae; ramus narrowing distally, with 4 setae on inner margin and 4 apical setae. Telson entire; broader than long; apically incised; 6 robust setae per lobe; dorsal midline entire. Female (sexually dimorphic characters). 8.6 mm. Gnathopod 1 parachelate; propodus subrectangular; lobe absent at posterior margin of carpus and propodus; dactylus longer than palm. Gnathopod 2 mitten-shaped, smaller than gnathopod 2 in males; coxa with protuberance; basis enlarged and elliptical; dactylus shorter than of males and shorter than palm; palm with 3 small robust setae. Pereopod 6 coxa subquadrate with protuberance; basis posterior margin convoluted; basis narrower than in male; merus, carpus and propodus unexpanded. Pereopod 7 merus and carpus unexpanded. Distribution. Poste la Fayette, Mauritius.Published as part of Green, M. A. A., Appadoo, C., Lowry, J. K. & Myers, A. A., 2021, A new genus and species of sand-hopper, Mauritiorchestia fayetta gen. nov., sp. nov (Amphipoda, Talitridae) from Mauritius, pp. 295-300 in Zootaxa 5068 (2) on pages 297-298, DOI: 10.11646/zootaxa.5068.2.9, http://zenodo.org/record/570443
FIGURE 1 in A new genus and species of sand-hopper, Mauritiorchestia fayetta gen. nov., sp. nov (Amphipoda, Talitridae) from Mauritius
No full textFIGURE 1. Mauritiorchestia fayetta gen. nov, sp. nov., male, 9.8 mm, female 8.6 mm, Poste La Fayette, Mauritius.Published as part of Green, M.A.A., Appadoo, C., Lowry, J.K. & Myers, A.A., 2021, A new genus and species of sand-hopper, Mauritiorchestia fayetta gen. nov., sp. nov (Amphipoda, Talitridae) from Mauritius, pp. 295-300 in Zootaxa 5068 (2) on page 298, DOI: 10.11646/zootaxa.5068.2.9, http://zenodo.org/record/570443
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