Crangon nigricauda Stimpson, 1856

Wicksten, Mary K., 2012, Decapod Crustacea of the Californian and Oregonian Zoogeographic Provinces 3371, Zootaxa 3371, pp. 1-307 : 112

Crangon nigricauda Stimpson, 1856

( Fig. 27O, P, Pl. 4F, G)

Crangon nigricauda Stimpson, 1856: 97 . — Holmes 1900: 170, pl. 2, fig. 31.— Rathbun 1904: 112, fig. 50. — Kozloff 1974: 164. — Word & Charwat 1976: 83. — Butler 1980: 106. — Chace & Abbott 1980: 574. — Ricketts et al. 1985: 328, fig. 253.— Jensen 1995: 40, fig. 58. — Kuris et al. 2007: 636, pl. 319 D.

Crago nigricauda . — Schmitt 1921: 84. — Goodwin 1952: 395.

Crangon (Neocrangon) nigricauda . — Zarenkov 1965: 1763.

Diagnosis. Exoskeleton thin, smooth. Rostrum reaching base of cornea of eye, apex rounded. Carapace with 1 median dorsal tooth, also hepatic, branchiostegal teeth, weak pterygostomian tooth. Eye pigmented. Stylocerite acute, about as long as first segment of antennular peduncle. Scaphocerite broad, blade about equal to lateral tooth. Third maxilliped setose, with exopod. Pereopod 1 with spine on inner surface of merus, propodus broad, dactyl closing nearly transversely across propodus. Pereopod 2 slender, chelate. Pereopod 3 slender, with simple dactyl. Pereopods 4, 5 more robust, longer than third, with simple dactyls. Pleura of abdominal somites blunt to rounded. Somite 6 with median dorsal carina, ventral groove, moderate posteroventral tooth. Telson narrow, with broad median groove, 2 pairs dorsolateral spines. Inner uropod longer than telson. Male total length 32 mm, female 53 mm.

Color in life. Brown ( Jensen 1995: fig. 58). Speckled with gray, black, white; tail fan dark brown to black, well camouflaged against sand. The color notes are from shrimp from San Francisco Bay, California.

Habitat and depth. Sand, intertidal zone to 57 m.

Range. PrinceWilliam Sound, Alaska to San Geronimo I., Baja California . Type locality Tomales Bay , California .

Remarks. This is one of the most common intertidal shrimps of sandy bays in northern California.