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World Crustacea


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Tanaidacea: Families

Kim Larsen

Sphyrapidae Gutu, 1980 Sphyra.rtf .

Sphyrapidae Gutu, 1980b: 393.

Description . Body shape semicylindrical, dorsoventrally flattened. Head , eye lobes only without visual elements . Antennule (antenna 1) biramous. Antenna (antenna 2), with more than 6 articles; squama reduced, or absent. Mouthparts well developed, functional in both sexes. Mandible , palp present or absent, 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 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 not 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.

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. Francapseudes Bacescu, 1981; Kudinopasternakia Gutu, 1991; Pseudosphyrapus Gutu, 1980; Sphyrapus Norman & Stebbing, 1886; Tanapseudes Bacescu, 1978a.

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

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