Tanaidacea: Families

Kim Larsen

Apseudidae Leach, 1814

Apseudii Leach, 1814: 404.

Apseudidae Leach, 1814: 386.

Apseidiadae Samouelle, 1819: 109.

Apseudidæ G.O. Sars, 1882: 6.

Apseudiden Zimmer, 1926: 686.

Apseudides Monod, 1926: 11.

Apseudids Boesch, 1973: 126.

Description. Body shape semicylindrical, dorsoventrally flattened, or cylindrical. Head, eye present, or lobes only without visual elements. Antennule (antenna 1) biramous. Antenna (antenna 2), with more than 6 articles; squama present. Mouthparts well developed, functional in both sexes. Mandible, palp present, comprised of three articles; lacina mobilis on both right and left mandible; setal row present; molar broad. Labium with one pair of lobes, articulated. Maxillule (maxilla 1), with two endites; palp biarticulated, palp with more than two setae. Maxilla (maxilla 2) well developed. Maxilliped, coxa present; basis not fused; endites not fused, narrower than basis. Epignath large, reniform, with two unevenly sized articles.

Pereonite 1 not reduced, at least three times wider than pereopod basis diameter. Cheliped, attachment via coxa, or directly to ventral cephalothorax surface; exopod present; carpus with few or no long plumose setae. Pereopods 1 to 3, coxae present. Pereopod 1, without plumose setae on distal articles; coxa extended into acute spine; ischium present; dactylus short, curved. Pereopod 4 as long as pereopods 5 and 6, dactylus not reduced. Pereopods 4 to 6, coxa present; dactylus and terminal seta not fused. Marsupium formed by four pairs of oostegites, or five pairs of oostegites.

Pleon with five developed pleonites. Pleopods biramous; male pleopods well developed; female pleopods well developed. Uropods present; protopod without curved spiniform process; endopod with more than six articles; exopod with more than two articles.

Generic composition. Apseudes Leach, 1814; Atlantapseudes Bacescu, 1978b; Bilobatus Sieg, 1993; Bunakenia Gutu, 1995; Carpoapseudes Lang, 1968; Fageapseudes Bacescu & Gutu, 1971; Gutuapseudes Edgar, 1997; Langapseudes Bacescu, 1987; Leviapseudes Sieg, 1983 (=Leiopus sensu Beddard, 1886); Pectinapseudes Bacescu & Williams, 1988; Pugiodactylus Gutu, 1995 (=Pugioapseudes Gutu, 1995, lapsus calami); Spinoapseudes Gutu, 1996; Tuberapseudes Bacescu & Gutu, 1971; Typhlapseudes Beddard, 1886.

Remarks. Remarks. Family overburden, probably not monophyletic.

Cite this publication as: 'Larsen, K. (2002 onwards). Tanaidacea: Families. Version 1: 2 October 2002. http://crustacea.net'.