Abstract
Leuctra usdi sp. n. is described from Tennessee and Alabama, U.S.A. Leuctra usdi sp. n. is differentiated from other members of the L. tenuis (Pictet) species group mainly by unique characteristics of the dorsal process on the male 7 th abdominal tergum. New Alabama state records of Leuctra carolinensis Claassen, L. grandis Banks and Perlesta teaysia Kirchner & Kondratieff are reported.References
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