Tanaidacea: Families

Kim Larsen

Colletteidae Larsen & Wilson, 2001

Colletteidae Larsen & Wilson, 2002: xxx.

Description. Body shape cylindrical. Head, eye lobes only without visual elements, or absent. Antennule (antenna 1) uniramous, with four to five articles. Antenna (antenna 2), with 5 or 6 articles; squama absent. Mouthparts well developed, functional in both sexes. Mandible, palp absent; lacina mobilis only on left mandible; setal row absent; molar broad, or pointed. Labium with one pair of lobes, not articulated. Maxillule (maxilla 1), with one endite; palp uniarticulated, palp with two terminal setae. Maxilla (maxilla 2) reduced. Maxilliped, coxa absent; basis partly fused; endites not fused, narrower than basis. Epignath small, falciform, uniarticulated, with few setae at apex or completely smooth.

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

Pleon with five developed pleonites. Pleopods biramous; male pleopods with simple setae only, or reduced; female pleopods with simple setae only, or reduced, or absent. Uropods present; protopod without curved spiniform process; endopod with two articles; exopod with one article, or reduced.

Generic composition. Collettea Lang, 1973; Cristotanais Kudinova-Pasternak, 1990; Expina Lang, 1968; Filitanais Kudinova-Pasternak, 1973; Haplocope G. O. Sars; 1882; Isopodoides Larsen and Heard, 2002; Leptognathiella Bird & Holdich, 1984; Leptognathiopsis Holdich & Bird, 1986; Libanius Lang, 1971; Macrinella Lang, 1971; Mirandotanais Kussakin & Tzareva, 1974; Nematotanais Bird & Holdich, 1985; Pseudoleptognathia Sieg, 1986; Pygagrandis Larsen and Heard, 2002; Subulella Holdich & Bird, 1986.

Remarks. Remarks. A deep water taxon.

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