The mayfly fauna of Washington consists of 109 species in 38 genera among 12 families. Previous and new data (from 22 major collections) are given for all species and include new state records for 45 of the species, and the first published data for 57 species. In addition, 725 new county records involving 38 of the 39 state counties are given for 91 of the species.
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1 March 2007
Mayflies (Ephemeroptera) of the far western United States. Part I: Washington
M. D. Meyer,
W. P. McCafferty
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