Pteronarcys biloba Newman 1838

Pteronarcys biloba Newman, 1838 Notes Pteronarcys biloba is commonly known as the Knobbed Salmonfly (Stark et al. 2012). This species has been reported from Quebec and the Canadian Maritime Provinces southeast mainly through the Appalachian Mountains to Alabama and Georgia (Nelson 2000, DeWalt et al. 2024). This species is widely distributed across New York State (Fig. 44 d), with an adult flight period extending from late April through late June (Fig. 45) from a wide range of streams and rivers at elevations ranging from 98-647 m asl (Fig. 46).