Spirontocaris truncata Rathbun, 1902

Wicksten, Mary K., 2012, Decapod Crustacea of the Californian and Oregonian Zoogeographic Provinces 3371, Zootaxa 3371, pp. 1-307 : 95

Spirontocaris truncata Rathbun, 1902

( Figs. 23F, G)

Spirontocaris truncata Rathbun, 1902a: 284 ; 1904: 67, fig. 22. — Holthuis 1947: 9. — Hayashi 1977: 158. — Butler 1980: 163, pl. 3C. — Wicksten 1984b: 246, fig. 4; 1990b: 590. — Chace 1997: 57.

Diagnosis. Rostrum moderately deep, extending beyond antennular peduncle, with truncate apex, 7–9 dorsal, 3 or 4 ventral teeth. Carapace with 3 supraorbital teeth. Pereopods 1–3 with epipods. Pereopods 3–5 with spinose, bifid dactyls. Merus of pereopod 3, with 2 or 3 spines; pereopod 4, with 2 spines; pereopod 5, with no spines. Pleura of abdominal somites 1–3 broadly rounded, somites 4, 5 sharp-tipped. Telson with 4 or 5 pairs dorsolateral spines, tapering to acute apex. Male total length to 14 mm, female to 20 mm.

Color in life. Carapace yellow-orange, with red-orange to deep red dots, posterior dorsal teeth of carapace dark brown, red dots on appendages, antennae; abdomen milkish with faint red dots on dorsal surface of third segment ( Butler 1980: pl. 3C).

Habitat and depth. Rocky reefs, in sponges, 37–92 m.

Range. Gabriola Is., Strait of Georgia , British Columbia to SW of San Carlos Point, Baja California, Mexico. Type locality Hecata Bank, Oregon .

Remarks. All records of this species come from subtidal rocky reefs and banks. One was hand-collected by a SCUBA diver between 37–55 m on a reef off Point Sur, California.