E-Fauna BC: Electronic Atlas of the Wildlife of British Columbia

Pagurus stevensae Hart, 1971
Steven's Hermit Crab
Family: Paguridae

Species account author: Josephine Hart.
Extracted from Crabs and their relatives of British Columbia.
Photo of species

© Aaron Baldwin  Email the photographer   (Photo ID #2146)

E-Fauna BC Static Map
Distribution of Pagurus stevensae in British Columbia
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Species Information

Carapace: shield slightly longer than wide in large individuals and subequal in small. Eyestalk long and slender; cornea slightly dilated. Right cheliped long, slender and subequal or slightly shorter than walking legs, surfaces with short setae and numerous small spines; merus with tufts of short setae and a few spines; carpus elongate with subparallel margins, inner margin with several rows of large, corneous-tipped spines, outer margin with small spines but not in clearly defined rows; palm slender with inner margin relatively straight, outer curved and both armed with strong corneous-tipped spines, dorsal surface with numerous spines and an elongated inverted V-shaped spiny ridge medially; fingers with broad flat teeth and short, corneous, rasping type setae. Left cheliped long and slender; carpus with 2 rows of spines mid-dorsally; palm with a row of spines which alternate in direction of tips and which reaches to middle of fixed finger, cutting surface of finger with comb of rasping type of setae. 1st and 2nd walking legs long and slender, laterally compressed, with tufts of short stiff setae, ventral margin of meri and dorsal margin of carpi of 1st legs serrate; dactyls with claws long and sharp.

Size

Shield length: male 11 mm.

Colour

Carapace: shield and posterior part white with red and tan reticulations; lateral areas yellow. Abdomen also white with red and tan reticulations. Chelipeds pinkish brown with dark red spines and scattered small red dots; fingers pink. Walking legs red-brown with light area and scattered red dots; propodus with dark stripe dorsally and ventrally; dactyl with proximal red-brown band and red or orange stripes dorsally, ventrally and mid-laterally with interrupted rows of small red spots on upper, outer face. Eyestalk pale orange with interrupted red stripes; cornea black with flecks of green and yellow. Antennal flagellum red, translucent.

Habitat


Mud, sand or gravel bottom; often occupy shell covered with living sponge, Suberites ficus, which ultimately dissolves the calcium carbonate of the shell. But the cavity is retained and increases in size with the growth of the crab.

Distribution

Range

Akun Bay, Akun Island, Bering Sea, to Puget Sound, Washington; 13 to 198 m.
Distribution In British Columbia

Widespread but uncommon except for juveniles which are sometimes found in swarms in June and July.

Status Information

Origin StatusProvincial StatusBC List
(Red Blue List)
COSEWIC
UnlistedUnlistedUnlistedUnlisted
BC Ministry of Environment: BC Species and Ecosystems Explorer--the authoritative source for conservation information in British Columbia.

Additional Photo Sources

General References


Recommended citation: Author, Date. Page title. In Klinkenberg, Brian. (Editor) 2021. E-Fauna BC: Electronic Atlas of the Fauna of British Columbia [efauna.bc.ca]. Lab for Advanced Spatial Analysis, Department of Geography, University of British Columbia, Vancouver. [Accessed: 2022-09-28 1:41:38 AM]
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