Confirmed records of Leuctra variabilis and Alloperla usa in Maryland (Plecoptera : Leuctridae, Chloroperlidae), with additional comments on the former species

摘要

The status of Leuctra variabilis in Maryland is clarified, First time Maryland collecting records of this species are reported, Earlier collecting records of L, variabilis in Maryland are likely those of closely similar L. carolinensis, SEM photomicrographs of the male terminalia of both species are provided. A new state record for Alloperla usa is also reported. [References: 7]