Decapod Crustacea of the Californian and Oregonian Zoogeographic Provinces 3371 Author Wicksten, Mary K. text Zootaxa 2012 2012-07-04 3371 1 307 journal article 1175­5334 Pagurus hirsutiusculus (Dana, 1851) ( Fig. 44A, B ; Pl. 10B) Bernhardus hirsutiusculus Dana, 1851: 70 ; 1852: 443, pl. I; 1855: pl. 27, fig. 3. Pagurus hirsutiusculus .— Holmes 1900: 143 (part). — Rathbun 1904: 159 (part). — Schmitt 1921: 137 , fig. 89 (part). — Johnson & Snook 1927: 334 , figs. 279, 280 (part). — Makarov 1962: 171 , pl. 3, fig. 4. — Wicksten 1977c: 541 . — Hart 1982: 138 , fig. 51 (part). — Ricketts et al . 1985: 278 (part). — Jensen 1995: 66 , fig. 125. — Komai & Yakovlev 2000: 305 . — Lemaitre & Castaño 2004: 78 . — Kuris et al . 2007: 650 . Pagurus hirsutiusculus hirsutiusculus . — McLaughlin 1974: 175 , figs. 43a–c, 44a–h. — Haig & Abbott 1980: 585 , fig. 24.11. — McLaughlin et al . 1988: 430 . — Mesce 1993: 95 . Diagnosis. Rostrum triangular, pointed, reaching to middle of ocular scale or beyond; much longer than lateral projections of carapace. Eyestalk stout, cornea not dilated, ocular scale pointed. Major cheliped stout, shorter than pereopods 2, 3; merus, carpus setose, with granules, spines, ridges; hand slightly convex, with many granules. Major cheliped elongated, fingers gaping in adult male. Minor cheliped setose, with granules. Pereopods 2, 3 setose, dactyls slender, about as long as propodi. Telson asymmetrical, lateral margins with notches, terminal margin with notch, teeth. Uropods asymmetrical. Carapace length to 19 mm . Color in life. Almost black to greenish brown. Apices of minor chela tan or orange. Pereopods 2, 3 with white band on propodus, often also blue dot; dactyl whitish, striped with blue, red. Antennal flagellum banded with translucent and brown. The color notes are from crabs from Coyote Point, San Francisco Bay, California . Habitat and depth. Often in protected areas with silt or in bays or harbors. Usually upper and middle intertidal zone, to 110 m . Range. Eastern Hokkaido , Kuril Is. , Kamchatka ; Pribilof Is. to Monterey , California . Type locality Puget Sound. Records from southern California refer to Pagurus venturensis Coffin, 1957 . Remarks. This is a common intertidal hermit crab. It usually lives in areas more protected from strong surf than P . samuelis , although both species can co-occur. It often inhabits shells of Nucella spp. In San Francisco Bay, it uses shells of gastropod species introduced from the Atlantic. Slipper shells ( Crepidula spp. ) may live inside the aperture of the shell. Mesce (1993) determined that setae on the minor chela of P . hirsutiusculus act as mechanoreceoptors and chemoreceptors during examination of gastropod shells.