Allocapnia vivipara

Allocapnia vivipara (Claassen, 1924) Notes Allocapnia vivipara is commonly referred to as the Shortwing Snowfly (Stark et al. 2012). This species is distributed in a diagonal band from southern Ontario and Quebec west to Iowa, Kansas, Minnesota, Nebraska, and Oklahoma (Ross and Ricker 1971, DeWalt et al. 2024). Males are apterous and have been reported from a wide range of stream sizes and can be especially abundant in nutrient rich streams (Ross and Ricker 1971). In New York, adults of A. vivipara have been collected from mid-February through mid-April (Fig. 7) from streams and rivers in agricultural areas at elevations of 32-496 m asl (Fig. 9). This species distribution is primarily centered along the Great Lakes Plain and other lowland valleys in the state, but it is still able to colonize some areas of higher elevation in Level IV Ecoregion Northern and Western Adirondack Foothills (58 ab) (Fig. 12 b).