Leuctra truncata Claassen, 1923

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-

Leuctra truncata Claassen, 1923

Notes

This is an Appalachian-distributed species commonly known as the Truncate Needlefly ( Stark et al. 2012), and is known from Quebec and the island of Newfoundland south to North Carolina ( DeWalt et al. 2024). Harper and Hynes (1971 a) reported this species from small cold streams in southern Quebec, with adult emergence occurring late in the summer. Our collections from New York indicate a similar period of adult activity from mid-July through mid-September (Fig. 13 ). In New York, Leuctra truncata has been reported from elevations ranging from 20-684 m asl (Fig. 14 ) from Level IV Ecoregions Acid Sensitive Adirondacks (58 aa), Northern and Western Adirondack Foothills (58 ab), Eastern Adirondack Foothills (58 ac), Central Adirondacks (58 ad), Hudson Valley (59 i), and Catskills Transition (60 c) (Fig. 16 e ).

Figures

Figure 13. Adult flight period for 13 Leuctridae species in New York State. Red fill indicates positive adult collections while gray shaded areas indicate adults are likely present but not reported.

Figure 14. Elevation box plot for 13 Leuctrdae species in New York State. Boxes indicate interquartile range, horizontal line in box represents median elevation, and outliers are depicted with large circles.

Figure 16 e. Leuctra truncata