Hemipenaeus Bate, 1881

Tavares, Carolina R. & Serejo, Cristiana S., 2007, Taxonomy of Aristeidae (Dendrobranchiata: Penaeoidea) from the central coast of Brazil, collected by the Revizee program, between 19 º and 22 ºS, Zootaxa 1585, pp. 1-44 : 23

Genus Hemipenaeus Bate, 1881

Integument glabrous. Rostrum either moderately elongate in females and short in males, or short in both sexes, bearing 2, occasionally 3 basal dorsal teeth, followed by single postrostral tooth. Carapace with branchiostegal spine continuous with sharp carina; orbital, postantennal, and hepatic spines absent; postrostral carina reaching to midlength or almost to posterior margin of carapace; cervical sulcus either almost reaching middorsal line, or only demarked ventrally, if it all; postcervical sulcus present or absent; hepatic sulcus strong; branchiostegal carina well marked; branchiocardiac carina and sulcus strong. Eye with cornea well developed, somewhat dorsoventrally flattened; calathus with strong tubercle at about midpoint of mesial margin. Dorsal antennular flagellum short, flattened for most of its length; ventral flagellum elongate, slender terete, not modified in mature male. Scaphocerite with apex of blade rounded, lateral marginal ridge ending in spine at about distal fourth of length of lamella.

First to fifth pereopods each with reduced exopod; meri of pereopods lacking cuspidate setae; fourth a fifth pereopods very slender. Thelycum open, with broad anteriorly acute median protuberance on sternite XII; sternite XIII broad, short, roughly rectangular

Petasma with distal margin of lateral lobule oblique, mesially reaching as far as median lobule; ventral costa free distally for about half or one-third of its length. First and second abdominal somites dorsally rounded, third to sixth somites dorsally carinate, third somite armed with spiniform process arising from posterior third of carina; sixth somite with small middorsal spine on posterior margin. Telson bearing 4 pairs of small movable lateral spines in about posterior half; apex acute (modified from Pérez Farfante & Kensley, 1997).

Remarks: Specimens of Hemipenaeus carpenteri examined herein, have the distal margin of lateral lobe of petasma exceeding the median lobe. It is different from Pérez Farfante & Kensley (1997), where the distal margin of dorso-lateral lobe of petasma reaches as far as ventro-median lobe.