Haploperla orpha

Haploperla orpha (Frison, 1937) Notes Haploperla orpha is commonly referred to as the Quadrate Sallfly (Stark et al. 2012). The range of this uncommon species extends in Canada from New Brunswick west to Ontario and in the USA from Maine west across the Laurentian Great Lakes region to North Dakota (Surdick 2004, DeWalt et al. 2024). Scarce biological information exists for this species other than adult phenology and its collection in larger rivers (Surdick 2004). Adults have been collected infrequently in New York between mid-May through late July (Fig. 26) from streams and rivers at elevations ranging from 246-369 m asl (Fig. 27) in Level IV Ecoregions Northern and Western Adirondack Foothills (58 ab), Eastern Adirondack Foothills (58 ac), and Champlain Lowlands (83 b) (Fig. 29 c). It is probably more common than is presented here. Use of beating sheets and sweepnets along large rivers in June and July will likely increase the number of known locations.