Pagurus cornutus (Benedict, 1892)

Wicksten, Mary K., 2012, Decapod Crustacea of the Californian and Oregonian Zoogeographic Provinces 3371, Zootaxa 3371, pp. 1-307 : 186

Pagurus cornutus (Benedict, 1892)

(Pl. 9A)

Eupagurus cornutus Benedict, 1892a:12 .

Pagurus cornutus . — Makarov 1962: 181, pl. 5, fig. 1. — Pereyra & Alton 1972: 45. — McLaughlin 1974: 225, fig. 57, 58. — Hart 1982: 144, fig. 54. — Wicksten 1989b: 314. — Lemaitre & Castaño 2004: 78.

Diagnosis. Rostrum acute, longer than lateral projections of carapace. Eyestalk short, stout; corneae dilated, ocular scale with subterminal spine. Major cheliped stout, shorter than pereopods 2, 3; with setae; merus with distal toothed margin; carpus with serrate margins and few dorsal spines, large, triangular horn-shaped ridge on palm, apex past base of fixed finger. Minor cheliped stout, hand swollen on left side, with spinous ridge running from middle of base of palm to middle of fixed finger; fixed finger with curved apex. Pereopods 2, 3 setose, carpus of pereopod 2 serrate, also carpus of right pereopod 3; dactyls with stiff dorsal setae, movable ventral spines, dactyls longer than propodi, flattened, with longitudinal groove. Telson asymmetrical, with lateral notch, terminal margin with medial notch, teeth. Carapace length to 18.7 mm.

Color in life. Mostly red to orange. Ischium and merus of each chela with cream stripes, spines, white marginal teeth, carpus with yellow spine; palm pink with yellow spines along margins. Pereopods 2, 3 deep or pale red; merus with distal pink band, dactyl pale. Eyestalk orange with light spots, ocular scale orange, cornea black with silver flecks. Antennal flagellum pale orange ( Hart 1982).

Habitat and depth. Continental shelf and slope, on mud or sand, 160–830 m.

Range. Northwestern Pacific and Bering Sea to west of Columbia River mouth , Oregon. Type locality Clarence Strait , Alaska.