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Pagurus confragosus (Benedict, 1892)
Knobbyhand Hermit Crab
Family: Paguridae

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

Photograph

© Aaron Baldwin     (Photo ID #2199)

Map

E-Fauna BC Static Map

Distribution of Pagurus confragosus in British Columbia in British Columbia

Species Information

Carapace: shield subequal in length and width. Eyestalk short and stout; cornea dilated. Right cheliped stout, setose and shorter than walking legs; merus setose; carpus with small spines on dorsal surface and with serrate margins; hand spined and with a raised triangular ridge whose base is about 2/3 width of palm and apex past level of base of finger. Left cheliped slender with rows of spines on carpus; hand with palm greatly inflated on outer side of a convex ridge and with a row of large spines on right side and small ones on left, extending from base of hand nearly to middle of fingers. 1st and 2nd walking legs stout; carpi serrate marginally on 1st legs; dactyls with stiff setae on dorsal margin, and small movable spines ventrally; claws small.

Size

Shield length: male 20.2 mm.

Colour

Carapace white with pink and red mottling. Abdomen cream and white with red mottling. Chelipeds red and white blotched proximally; carpus white with bright red splotches and spines; hand pink and fingers with white cutting surfaces. Walking legs with ischium pink, red and white; merus and carpus red, white and pale tan; propodus with bright red bands proximally and distally and with lighter colour between; dactyl red with a fine lateral stripe proximally, pink medially and orange distally. Eyestalk pink with white stripe and red patches; cornea black with fold flecks. Depth of colour varies in individuals.

Habitat


Rocky, mud, sand or gravel.

Distribution

Range

Bristol Bay, Alaska, to Columbia River mouth, Oregon; 55 to 435 m.
Distribution In British Columbia

Not common but widespread.

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.

General References