Eucera douglasiana (Cockerell, 1906:278)



Taxonomy & Nomenclature

Synonym/s: Tetralonia douglasiana Cockerell, 1906:278 (original combination); Synhalonia douglasiana (Cockerell, 1906:278)


Conservation Status


Last record: 1902



Steamboat Rock, Grand Coulee, Grant County, Washington, USA


Biology & Ecology




Only known from a single specimen






Original scientific description:

Cockerell, T. D. A. (1906). Some bees from Washington State. The Canadian Entomologist 38: 277-282.


Other references:

Cockerell, T. D. A. (1912). Names applied to the eucerine bees of North America. Proc. U.S. Natl. Mus., 443: 261-273.

Hurd Jr., P. D. 1979. Superfamily Apoidea, pp. 1741-2209 in K. V. Krombein, P. D. Hurd, Jr., D. R. Smith, and B. D. Burks, eds., Catalog of Hymenoptera in America north of Mexico, Vol. 2. Washington, DC: Smithsonian Institution Press.

Michener, C. D. (2000). The Bees of the World. Baltimore, MD: Johns Hopkins University Press.

Sheffield, C. S. and Heron, J. M. (2018). The bees of British Columbia (Hymenoptera: Apoidea, Apiformes). J. Entomol. Soc. Brit. Columbia 115: 44-85. [automatic download]

Shepherd, M. D. 2005. Species Profile: Eucera douglasiana. In Shepherd, M. D., D. M. Vaughan, and S. H. Black (Eds). Red List of Pollinator Insects of North America. CD-ROM Version 1 (May 2005). Portland, OR: The Xerces Society for Invertebrate Conservation.

Tepedino, V.J., and T.L. Griswold. 1995. The bees of the Columbia Basin. Final report, USDA Forest Service, Portland, OR. 212 pp (Technical Report)


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