Isoperla cotta Ricker 1952

Isoperla cotta Ricker, 1952 Notes Isoperla cotta is commonly known as the Ontario Stripetail (Stark et al. 2012). This species is distributed from the Canadian Maritime Provinces west across the Laurentian Great Lakes region to Wisconsin and further south in the USA with disjunct records from West Virginia and Virginia (Szczytko and Kondratieff 2015, DeWalt et al. 2024). Hilsenhoff and Billmyer (1973) recorded this species from small to medium sized streams in Wisconsin. Harper (1973 b) reported a univoltine-slow life cycle with emergence from to mid-June to early July from southern Ontario. In New York, adults of I. cotta were collected from early April to mid-July (Fig. 38). We have found this species from a wide range of stream sizes ranging in elevation from 107-461 m asl (Fig. 39) from the Level IV Ecoregions Glaciated Reading Prong / Hudson Highlands (58 i), Acid Sensitive Adirondacks (58 aa), Eastern Adirondack Foothills (58 ac), Tug Hill Plateau (58 ae), and Tug Hill Transition (58 af) (Fig. 41 b).