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

Lepidurus couesii Packard, 1875
Coues Tadpole Shrimp
Family: Triopsidae

Photo of species

© Ian Gardiner  Email the photographer   (Photo ID #104665)

E-Fauna BC Static Map
Distribution of Lepidurus couesii in British Columbia
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Lepidurus couesii, Coues Tadpole Shrimp, is found within Canada from British Columbia (Royal BC Museum Collections) east to Manitoba, and within the USA across the northern tier of states from Idaho to Minnesota, plus Oregon and Utah (Rogers, 2001). Within British Columbia it has been collected from the vicinities of 70 Mile House and Rolla.

This species is found in vernal pools and temporary wetlands, though Hossack et al (2010) reported it from permanent beaver ponds. Clifford (1991) noted that though Lepidurus is considered part of the vernal fauna, it has been collected in Alberta as late as early October.


Clifford, H.F. 1991. Aquatic Invertebrates of Alberta. University of Alberta Press, Edmonton. 538pp.

Hossack, B.R., R.L. Newell & D.C. Rogers 2010. Branchiopods (Anostraca, Notostraca) from Protected Areas of Western Montana. Northwest Science 84: 52-59.

Rogers, D.C. 2001. Revision of the Nearctic Lepidurus (Notostraca). Journal of Crustacean Biology 21(4): 991-1006.

Royal BC Museum Collections. Available Online: http://search- collections.royalbcmuseum.bc.ca/Invertebratezoology (Accessed 21 Jun 2016)

Note Author: Ian Gardiner

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.

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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: 2024-06-12 8:26:08 AM]
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