Labraxeudes, Błażewicz-Paszkowycz & Bamber, 2007

Błażewicz-Paszkowycz, M. & Bamber, R. N., 2007, New apseudomorph tanaidaceans (Crustacea: Peracarida: Tanaidacea) from eastern Australia: Apseudidae, Whiteleggiidae, Metapseudidae and Pagurapseudidae, Memoirs of Museum Victoria 64, pp. 107-148 : 136

Genus Labraxeudes gen. nov.

Diagnosis. Metapseudid with conspicuous rostrum, lateral simple setae on cephalon and pereonites, denser simple setae on pleonites and pleotelson, pleotelson with large, rounded lateral apophyses; antennule compact, without spine-like apophyses along inner margin of proximal peduncle article, flagella of few articles; antenna basal peduncle articles compact, little or not longer than wide, with squama; mandible with palp; cheliped robust, with exopodite; pereopod 1 with exopodite, coxa with rounded spine-like apophysis, basis with plumose setae but without dorsal apophyses; 5 pairs of pleopods; uropods of few segments.

Etymology. From - labrax - the Greek for a sea-bass (also the specific name of the sea-bass, Dicentrarchus labrax ), a pun on Bass Strait, the region of the type locality, and a suffix from Ap s eudes.

Type species. Labraxeudes heliodiscus sp. nov. by original designation.

Remarks. This genus has morphological similarities with Apseudomorpha Miller, 1940 , Cyclopoapseudes Menzies, 1953 , and Julmarichardia Guţu 1989 , lying somewhere between the last 2; the first 2 of these genera are without exopodites on the cheliped or pereopod 1, and numerous details of the rostrum, pereopod and uropod morphology are inconsistent, although the unusual pleotelson morphology mirrors that of species of Cyclopoapseudes . Julmarichardia species have a slightly similar rostrum morphology and do have exopodites on the cheliped and pereopod 1; however, that genus is characterized by having the propodus of pereopods 2 to 6 substantially longer than the carpus, by the proximal antennule peduncle article having inner spine-like apophyses, by the basis of pereopod 1 having marginal apophyses dorsally and by a slender antenna.

The combination of substantial rostrum, exopodites on the cheliped and pereopod 1, compact antenna, short uropod, simple pereonite setation, compact propodi, dorsum of pereopod 1 basis without apophyses, robust cheliped and antennule peduncle without inner row of conspicuous denticulation shown by Labraxeudes gen. nov. is unique amongst Metapseudinae .