Isogenoides hansoni

Isogenoides hansoni (Ricker, 1952) Notes This species is commonly known as the Appalachian Springfly (Stark et al. 2012), and is known from Quebec and the Canadian Maritime Provinces, southwest into the USA along the Appalachian Mountains to North Carolina (Kondratieff 2004, Sandberg and Stewart 2005, DeWalt et al. 2024). Based on material examined at the CUIC, previous reports of Isogenoides doratus (Frison, 1942) from New York are applicable to I. hansoni. In New York, adults were present from early April through early July (Fig. 38) at elevations ranging from 100-1551 m asl (Fig. 39). This species is more widely distributed and commonly collected compared to I. frontalis, with scattered records from Level III Ecoregions Northeastern Highlands (58), Northern Allegheny Plateau (60), North Central Appalachians (62), and Eastern Great Lakes Lowlands (83) (Fig. 40 f).