Inventory and environmental status of the Ephemeroptera of far western United States
Abstract
A total of 15 families, 53 genera, and 189 species of Ephemeroptera are reported from California, Oregon, and Washington. For California, 14 families and 155 species are currently known, of which 55 species are documented for the first time. The families Potamanthidae and Pseudironidae are documented from California for the first time. California data include 1817 new county records involving 145 species. For Oregon, 12 families and 143 species are currently known, of which 33 species are documented for the first time. Oregon data include 967 new county records involving 122 of the species are provided. For Washington, 12 families and 111 species are currently known, of which 53 species are documented for the first time. Washington data include 796 new county records involving 98 species. Global environmental rankings, based on known population occurrences, are modified as necessary for each of the far western United States Ephemeroptera species. Only 69 percent (130) of the species are considered to be certainly secure, with 9% (17) being apparently secure, 8% (15) being possibly vulnerable, and 14% (26) being possibly imperiled or critically imperiled. Based on a number of criteria, the taxonomic validity of 26 species remains questionable.
Degree
Ph.D.
Advisors
McCafferty, Purdue University.
Subject Area
Entomology
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