Isoperla kirchneri Szczytko & Kondratieff, 2015

was described from Virginia and is currently known from New York south to North Carolina and Tennessee (DeWalt et al. 2018). The presence of this species in western Maryland is not surprising (Fig. 26). The specimens reported as I. namata Frison, 1942 by Grubbs (1997) were identified using Szczytko & Kondratieff (2015) and all now refer to I. kirchneri . Isoperla namata is herein removed from the Maryland state list.