Calastacus stilirostris Faxon, 1893

Wicksten, Mary K., 2012, Decapod Crustacea of the Californian and Oregonian Zoogeographic Provinces 3371, Zootaxa 3371, pp. 1-307 : 135

Calastacus stilirostris Faxon, 1893

( Fig. 31F)

Calastacus stilirostris Faxon, 1893: 194 ; 1895: 106, pl. 27, figs. 1– 1f. — de Saint Laurent 1972b: 354. — Hart 1982: 46, fig. 9. — Kensley 1989: 961. — Wicksten 1989b: 312. — Hendrickx 1995b: 157.

Diagnosis. Rostrum long, narrow; reaching second segment of antennular peduncle, with stout teeth at base. Carapace with prominent cervical groove, narrow anterior dorsal ridge. Eyestalk short, cornea without pigment. Antennular peduncle narrow. Antennal peduncle with long, narrow, thorn-like projections on second and third segments. Flagella of both antennae long, setose. Third maxilliped not as long as merus of major chela, with teeth on widest segment. Pereopod 1 with chelipeds subequal, fingers without gape, apices crossing. Palm of chela with prominent dorsal teeth, merus with sharp teeth on both dorsal, ventral sides. Pereopod 2 chelate, posterior pereopods slender, with simple dactyls. Abdomen slender, pleura blunt or rounded. Telson subequal in length to uropods, with 2 unarmed dorsal ridges. Uropods with unarmed ridges, outer margins with teeth. First pleopods modified for copulation, uniramous, others biramous. These crustaceans are hermaphroditic ( Hart 1982). Total length 52 mm.

Color in life. Not reported.

Habitat and depth. Brown sand or rock, 700–1208 m.

Range. Southwestern British Columbia to Peru. Type locality southeast of Acapulco, western Mexico (Albatross sta. 3418, 16˚ 33' N, 99˚ 52' 30"W) .

Remarks. At present, there are no records of this species between Washington and northern Baja California.