Pteronarcys proteus Newman, 1838

Myers, Luke William, Kondratieff, Boris C, Grubbs, Scott A, Pett, Lindsey A, DeWalt, R. Edward, Mihuc, Timothy B & Hart, Lily Veronica, 2025, Distributional and species richness patterns of the stoneflies (Insecta, Plecoptera) in New York State, Biodiversity Data Journal 13, pp. e 158952-e 158952 : e158952-

Pteronarcys proteus Newman, 1838

Notes

Pteronarcys proteus is commonly referred to as the Appalachian Salmonfly ( Stark et al. 2012). This Appalachian-distributed species has been reported from Quebec south to Kentucky and North Carolina ( Nelson 2000, DeWalt et al. 2024). Life history studies of P. proteus in Virginia ( Perry et al. 1987) and Pennsylvania ( Grubbs and Cummins 1996) have indicated a three to four year cycle. Grubbs and Cummins (1996) reported the emergence of adults in Pennsylvania from May through June. We report an adult flight period for P. proteus in New York extending from early April through the end of June (Fig. 45 ). Adults and larvae have been collected from a wide range of streams and rivers at elevations ranging from 48-866 m asl (Fig. 46 ) and are both widely distributed and common across the state (Fig. 47 ).

Figures

Figure 45. Adult flight period for 4 Pteronarcyidae species in New York State. Red fill indicates positive adult collections while gray shaded areas indicate adults are likely present but not reported.

Figure 46. Elevation box plot for 4 Pteronarcyidae species in New York State. Boxes indicate interquartile range, horizontal line in box represents median elevation, and outlliers are depicted with large circles.

Figure 47. New York distribution maps of Pteronarcys proteus.