Odius Lilljeborg, 1865

Labay, Vjacheslav S., 2010, A new species and subspecies of Ochlesidae Stebbing, 1910 (Amphipoda: Gammaridea) from the Okhotsk Sea, Zootaxa 2354, pp. 35-44 : 40

Genus Odius Lilljeborg, 1865

Type species of the genus Odius carinatus (Bate, 1862) , original description: Otus carinatus Bate, 1862 .

Diagnosis and relationship (emended from J. Berge, W. Vader and C. O. Coleman, 1998 with remarks). – Body with dorsal keel; eyes reniform; labrum narrow, incised; base of mandible narrow conical, palp at same level as molar, projection of hingeline present (fig. 6e), incisor toothed and pointed; maxilla 1 palp 1- articulate, small, carrying one setae, as in fig. 6g, 6h; inner plate with 2 plumose setae on the apex; maxilliped palp 4-articulate; pereopod 1 chelate; palm of propodus forming a motionless finger of chela, with short spine at the posterodistal corner; propodus of pereopod 2 enlarged (its distal margin is approximately 1.5 time wider than proximal one); carpus shorter than propodus; matasome 1 and 2 dorsally produced; metasome dorsal projection acute and upright; telson cleft.

The genus includes 3 species: Odius carinatus (Bate, 1862) from the Arctic Ocean, boreal Pacific Ocean and boreal Atlantic Ocean, Odius cassigerus Gurjanova, 1972 from the southern Okhotsk Sea ( Gurjanova, 1951, 1972) and Odius polarsterni ( Brandt et Vassilenko, 1995) , original description Imbrexodius polarsterni Brandt et Vassilenko, 1995 from Arctic Region (northeastern Greenland).