Gennadas incertus ( Balss, 1927 )

Wicksten, Mary K., 2012, Decapod Crustacea of the Californian and Oregonian Zoogeographic Provinces 3371, Zootaxa 3371, pp. 1-307 : 22

Gennadas incertus ( Balss, 1927)

( Fig. 5A, B, G)

Amalopenaeus incertus Balss, 1927: 265 , figs. 24-29.

Gennadas incertus . — Anderson & Lindner 1943: 294. — Pearcy & Forss 1966: 1137. — Ebeling et al. 1969: 12. — Kensley 1972: 12, 14, figs. 4i, 5j. — Crosnier 1978: 37, figs. 15b, 19a. — Krygier & Pearcy 1981: 78. — Hendrickx & Estrada-Navarrete 1989: 107. — Hendrickx & Estrada-Navarrete 1996: 27, fig. 13 (extensive synonymy). — Pérez Farfante & Kensley 1997: 66. — Guzmán & Wicksten 2000: 928. — Wicksten 2002: 129.

Diagnosis (translated from Balss 1927). Carapace with branchiostegal tooth. Median carina of carapace extending to posterior margin. Abdominal somite 6 with dorsal carina. Petasma characteristic, with external lobe in two parts, forming 2 long points; of two parts of medial lobe, outer one small, narrow; inner part more broad. Accessory lobe well developed. Hooks on inner border equally shaped, of same length. Total length 25 mm.

Color in life. Bright red, with blue spots on appendages. Petasma may have purple tinge.

Habitat and depth. Pelagic, by day, 400–900 m, by night, 100–200 m; usually at 500–1000 m off Oregon .

Range. Indo-West Pacific , off Oregon to southern Baja California, Chile. Type locality not specified, near the Seychelles Is., Indian Ocean (4 ˚ 34' S, 53 ˚ 42' E and 4 ˚ 45' S, 48 ˚ 58' E) .