Allocapnia frisoni 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 frisoni Ross & Ricker, 1964

Notes

This species is commonly known as the Evansville Snowfly ( Stark et al. 2012). The distribution of this species extends from New York southwest mainly through the Appalachian Mountains to Tennessee ( Ross and Ricker 1971, DeWalt et al. 2024). Ross and Ricker (1971) recorded the presence of this species from six localities around Tompkins County (their fig. 93), however, no data was associated with these records. Adults of this species have been collected from mid-December through mid-March (Fig. 7 ). This species reaches its northern limits in streams of moderate elevation (121-577 m asl) in New York (Fig. 9 ) with reports from Level IV Ecoregions Glaciated Low Allegheny Plateau (60 a), Finger Lakes Uplands and Gorges (60 d), Cattaraugus Hills (60 f), Low Lime Drift Plain (61 c), and Unglaciated High Allegheny Plateau (62 d) (Fig. 10 b ).

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 10 b. Allocapnia frisoni