Comparison of the epiproct structure of two closely related species, Sweltsa fidelis (Banks) and S. revelstoka (Jewett) (Plecoptera: Chloroperlidae) |
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Authors: | Jennifer K. Delk Mary Jane Kilgore Bill P. Stark |
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Abstract: | The male epiprocts of 2 closely related western Nearctic species, Sweltsa fidelis (Banks) and S. revelstoka (Jewett), were examined using SEM. The males of these 2 species have been historically distinguished by epiproct measurements. The ratio of the length of the base to greatest width versus total epiproct length ranges from 0.49 μm to 0.67 μm ( ̄ x = 0.56) in S. fidelis and 0.55 μm to 0.69 μm ( ̄ x = 0.60) in S. revelstoka . Similarities in measurement suggest that the location of the greatest epiproct width is not a reliable and consistent character for distinguishing males of these 2 species. |
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