Isoperla dicala Frison, 1942

Notes

This species is commonly referred to as the Sable Stripetail (Stark et al. 2012). Isoperla dicala is distributed extensively across eastern North America, reported from most Canadian Provinces and USA states both east and immediately west of Hudson Bay and the Mississippi River southward along the appalachians to South Carolina (Szczytko and Kondratieff 2015, Verdone et al. 2023, DeWalt et al. 2024). Harper and Pilon (1970) documented emergence of I. dicala in late June from Ontario. In Virginia, adults were collected from late May to early July using a black light trap (Kondratieff and Despins 1983). In New York, adults of I. dicala have been reported from early May to early August (Fig. 38) from elevations ranging from 53-512 m asl (Fig. 39). This species was collected frequently from larger streams and rivers in Level III Ecoregions Northeastern Highlands (58) and Eastern Great Lakes Lowlands (83), and likely has a broader distribution than current collections indicate (Fig. 41 c).