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

Oregonia bifurca Rathbun, 1902
Crab
Family: Majidae

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

© Aaron Baldwin  Email the photographer   (Photo ID #44885)

E-Fauna BC Static Map
Distribution of Oregonia bifurca in British Columbia
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Species Information

Carapace setose, finely granulate and spiny and wider, anteriorly, than O. gracilis. Short divergent rostral horns. Eyestalk short, not reaching tips of triangular forward pointing post-orbital spines. Chelipeds of male only slightly longer than walking legs; of female slightly shorter. All pereiopods setose.

Size

Carapace: male 33.7 x 22.7 mm, female 29 x 20.6 mm.

Colour

Carapace deep pink with red patches; rostrum and post-orbital spines red. Chelipeds pink and brown with red on inner distal part of palm; fingers brown with red stripe on proximal half of both faces; teeth white. Walking legs brown with red stripes and patches ventrally; claw pale yellow. Antennule and antennae crimson; flagella translucent. Outer maxilliped crimson and brown. Eyestalk pale brown; cornea black.

Habitat


Deep water, green mud, broken shell, grey sand.

Distribution

Range

Sea of Okhotsk, northwestern Pacific Ocean, to off mouth of Columbia River, Washington; 494 to 1463 m.
Distribution In British Columbia

One record off Englefield Bay, Queen Charlotte Islands (53°2’N, 132°51.8’W), at 1204 m.

Comments


The small size and deep-water habitat results in this species being rarely collected or recognized.

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: 2024-10-11 7:47:00 PM]
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© E-Fauna BC 2021: An initiative of the Spatial Data Lab, Department of Geography, UBC