Speyeria zerene myrtleae dos Passos & Grey, 1945

Myrtle's silverspot



Taxonomy & Nomenclature

See NatureServe for details of taxonomic delimitation that affect the conservation status of this subspecies: and


Conservation Status

Extinct or extant

Last record: 1919



California, USA


Biology & Ecology










Original scientific description:

dos Passos, C. F. and Grey, L. P. (1945). Systematic catalog of Speyeria (Lepidoptera, Nymphalidae) with designations of types and fixations of type localities. American Museum Novitates 1297: 1-30.


Other references:

Black, S. H., and D. M. Vaughan. (2005). Species Profile: Speyeria zerene myrtleae. 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.

Emmel, J. F., and T. C. Emmel. 1998. A previously unrecognized subspecies of Speyeria zerene (Lepidoptera: Nymphalidae) from coastal Northern California. In T. C. Emmel (ed.), Systematics of Western North American Butterflies. Department of Zoology, University of Florida. pp. 451-454.

Launer, A.E., D.D. Murphy, J.M. Hoekstra and H.R. Sparrow. (1992). The endangered Myrtle’s silverspot butterfly: present status and initial conservation planning. Journal of Research on the Lepidoptera. 31:132-146.

U.S. Fish & Wildlife Service. (1988). Recovery Plan for Seven Coastal Plants and the Myrtle's Silverspot Butterfly. Portland, Oregon.

U.S. Fish & Wildlife Service. (1992). Endangered and Threatened Wildlife and Plants; Six plants and Myrtle's Silverspot Butterfly from Coastal Dunes in Northern and Central California Determined to be Endangered. Portland, Oregon.