A new species of Isoperla Banks (Plecoptera: Perlodidae) from the southern Appalachians, with notes on the I. montana group.

摘要

A new species, Isoperla dewalti Verdone & Kondratieff, 2017, is described from the Appalachian Mountains of North Carolina, Tennessee, and Virginia. The new species is proposed based on details of the male aedeagus, paraprocts, vesicle, general body coloration, female subgenital plate, and uniqueness of the ovum chorion. Supporting data includes color images and scanning electron micrographs. Isoperla smithi Szczytko and Kondratieff, 2015 is synonymized with I. nelsoni Szczytko and Kondratieff, 2015 based on examination of additional material. Previously unreported records of I. montana (Banks, 1898) and I. nelsoni are presented.