Taeniopterygidae Klapalek 1905

Taeniopterygidae Klapálek, 1905 Notes Taeniopterygidae are commonly referred to as Willowflies (Stark et al. 1998, Stark et al. 2012). Similar to Capniidae, adults of this family also emerge during winter and early spring months and together are known historically as " winter stoneflies " (Stewart and Stark 2002). Six genera and 11 species of Taeniopterygdae occur in New York. Stewart (2000) provided the most recent review of the adults of eastern North American species of this family. Larvae of eastern North American species appear to undergo a summer diapause similar to many capniids (Stewart and Stark 2002). Verdone et al. (2025) recently published an updated key to genera of adults and larvae for eastern North American taeniopterygids and a key to males, females and larvae of species of Oemopteryx, including two new species, from North America. Published adult collection dates for this family range from late February to mid-July (Fig. 22). Taeniopterygidae in New York have been reported from elevations ranging from 9-639 m asl (Fig. 23). Nearly all of the species reported from New York are present at lower elevations below 100 m asl, with the exception of Oemopteryx contorta and Bolotoperla rossi. Taeniopteryx metequi was collected from both the lowest and most narrow range of reported elevations in the state.