Allocapnia pechumani Ross & Ricker, 1964

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-

Allocapnia pechumani Ross & Ricker, 1964

Notes

This species commonly referred to as the St. Lawrence Snowfly ( Stark et al. 2012), has been reported patchily from Quebec and New Brunswick southwest to Ohio ( Ross and Ricker 1971, DeWalt et al. 2024). This species was named in honor of the late Dr. Verne Pechuman, a tabanid fly expert who conducted research at Cornell University. Although this species is widely distributed across much of the southern areas of the state, in northern areas it appears it is restricted to lower elevations of Level IV Ecoregions Champlain Lowlands (83 b), Ontario Lowlands (83 c), and Mohawk Valley (83 f) (Fig. 11 d ) and often in association with A. maria . In New York, adult collections occur from early March through mid-April (Fig. 7 ) in small streams with elevations ranging from 32-577 m asl (Fig. 9 ).

Figures

Figure 7. Adult flight period for 18 Capniidae species in New York State. Red fill indicates positive adult collections while gray shaded areas indicate adults are likely present but not yet reported.

Figure 9. Elevation box plot for 18 Capniidae species in New York State. Boxes indicate interquartile range, horizontal line in box represents median elevation, and outliers are depicted with large circles.

Figure 11 d. llocapnia pechumani