Allocapnia frisoni Ross & Ricker 1964

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).