Anarthruridae Lang, 1971
Anarthruridae Lang, 1971: 366.
, eye absent.
(antenna 1) uniramous, with four to five articles.
(antenna 2), with 5 or 6 articles; squama absent.
, palp absent; lacina mobilis only on left mandible; setal row absent; molar membranous or absent.
with one pair of lobes, not articulated.
(maxilla 1), with one endite; palp uniarticulated, palp with two terminal setae.
(maxilla 2) reduced.
, coxa absent; basis partly fused; endites not fused, narrower than basis.
small, falciform, uniarticulated, with few setae at apex or completely smooth.
not reduced, at least three times wider than pereopod basis diameter.
, attachment directly to ventral cephalothorax surface; exopod absent; carpus with few or no long plumose setae.
Pereopods 1 to 3
, coxae present.
, without plumose setae on distal articles; coxa not extended into acute spine; ischium present; dactylus long, curved with spinning glands at tip.
as long as pereopods 5 and 6, dactylus not reduced.
Pereopods 4 to 6
; dactylus and terminal seta not fused.
formed by four pairs of oostegites.
with five developed pleonites, or with all pleonites fused with pleotelson.
biramous; male pleopods well developed; female pleopods absent.
present; protopod without curved spiniform process; endopod with one article, or with two articles; exopod reduced.
G.O. Sars, 1882.
Cite this publication as: 'Larsen, K. (2002 onwards). Tanaidacea: Families. Version 1: 2 October 2002.