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

Mimulus foliatus Stimpson, 1890
Foliate Kelp Crab; Mimicking 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 #67392)

E-Fauna BC Static Map
Distribution of Mimulus foliatus in British Columbia
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Species Information

Carapace flat, smooth, pentagonal, with margins laminate and winglike. Shape of carapace like a maple leaf. Rostrum short and bifid. Chelipeds stout and 1st pair of walking legs much longer than others.


Carapace: male 35 x 39 mm, female 29 x 32.4 mm.


Considerable variation in colour and patterns. Carapace may be a combination of kelp brown, tan, pink, white, dove grey, light to dark brown, maroon, or red, and frequently with a broad white V medially. Chelipeds also vary in colour. Walking legs banded usually with white and tan.


Intertidal, among rocks; often encrusted with bryozoans and other such forms.



Unalaska, Alaska, to Port Arguello, Santa Cruz and Santa Rosa Islands, California; intertidal to 128 m.
Distribution In British Columbia

Only on open coast of Vancouver Island (as far east as Sooke) and Queen Charlotte Islands.

Status Information

Origin StatusProvincial StatusBC List
(Red Blue List)
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: 2024-06-19 6:34:46 PM]
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© E-Fauna BC 2021: An initiative of the Spatial Data Lab, Department of Geography, UBC