Leuctra triloba Claassen 1923

Leuctra triloba Claassen, 1923 Notes This species is commonly referred to as the Three-Lobed Needlefly (Stark et al. 2012), and has been previously reported from Quebec and New York south to Alabama and Florida (Grubbs 2015, DeWalt et al. 2024). Harper and Harper (1997) reported a fall emergence of this species, but no information is available on the habitat or microdistribution of this species. Our limited data from historical collections in New York indicate a similar emergence with dates ranging from mid-September through October (Fig. 13). Elevations for L. triloba in New York range from 125-340 m asl (Fig. 14). This species appears to be relatively uncommon at its northernmost range limits. A single record is available from southern Quebec (Harper and Hynes 1971 a) and in New York State this species has not been recollected since its original description from the type locality in Ithaca and another nearby locality in the late 1800 ' s. Both state records reside in Level IV Ecoregion Finger Lakes Uplands and Gorges (60 d) (Fig. 16 d). Less frequent collection efforts during autumn and early winter may account for the paucity of records from New York.