Pseudopleonexes sheardi Just, 2002

Peart, Rachael A., 2006, A revision of Pseudopleonexes Conlan, 1982 (Crustacea: Amphipoda: Ampithoidae) with description of three new species from Australia, Zootaxa 1344, pp. 1-22 : 20-22

Pseudopleonexes sheardi Just, 2002

( Fig. 13 )

Pseudopleonexes sheardi Just, 2002: 31 –40, figs. 1–4.

Type material. Holotype: male, 3.5 mm, AM P35088, South Australia, Australia, 1910, W. R. Baker. Paratypes: numerous females and males, AM P35090 and AM P59944, Yatala Harbour, Spencer Gulf, South Australia, Australia, 32°45’S 137°55’E, 5 m, 8 March 1938, K. Sheard.

Diagnosis. Antenna 1 longer than antenna 2; antenna 2 robust, peduncle similar size to antenna 1 peduncle.Antenna 2 not densely setose on ventral margin. Maxilla 1 palp with 1 article. Gnathopod 1 carpus shorter than propodus, carpal lobe rounded; propodus narrow; palm transverse, entire, without midmedial tooth, without posterodistal tooth defining palm, without defining robust seta; dactylus overreaching palm. Gnathopod 2 with long setae on margins, not plumose; basis posterodistal lobe large and rounded, with three slender setae; carpus longer than merus, shorter than propodus; propodus broad, ovoid, not produced into an anterodistally setose lobe; palm acute, entire, without midmedial tooth, with small subacute posterodistal tooth defining palm, with one defining robust seta; dactylus subequal in length to palm. Pereopod 5 merus rounded; distal articles broad. Pereopod 6 distal articles broad. Pereopod 7 distal articles broad. Uropod 3 peduncle without distal robust seta.

Habitat. The precise habitat of P. s h e a rd i is not presently known.

Distribution. South Australia, including Spencer Gulf, Australia.

Figures

FIGURE 13. Pseudopleonexes sheardi Just, 2002, holotype, male, AM P 35088, 3.5 mm. South Australia, Australia. (Modified after Just 2002).