Capnura manitoba ( Claassen, 1924 )

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-

Capnura manitoba ( Claassen, 1924)

Notes

Capnura manitoba is commonly referred to as the Manitoba Snowfly ( Stark et al. 2012). This species ranges in Canada from Quebec and New Brunswick south to the USA from Maine west to Wisconsin ( Nelson and Baumann 1987, DeWalt et al. 2024). Harper and Hynes (1972) suggested that larvae of C. manitoba undergo a summer diapause similar to A. pygmaea . Little is known about the habitat and microdistribution of the larvae of this species ( Stewart and Stark 2002). In New York, adults were collected from mid-February through early June (Fig. 7 ) at 157-602 m asl (Fig. 9 ) from small, pristine spring-fed streams in Level IV Ecoregions Acid Sensitive Adirondacks (58 aa), Northern and Western Adirondack Foothills (58 ab), Eastern Adirondack Foothills (58 ac), Central Adirondacks (58 ad), Glaciated Reading Prong / Hudson Highlands (58 i), Champlain Lowlands (83 b), and Mohawk Valley (83 f) (Fig. 12 d ).

Figures

Figure 7. Adult flight period for 18 Capniidae species in New York State. Red fill indicates positive adult collections while gray shaded areas indicate adults are likely present but not yet reported.

Figure 9. Elevation box plot for 18 Capniidae species in New York State. Boxes indicate interquartile range, horizontal line in box represents median elevation, and outliers are depicted with large circles.

Figure 12 d. Capnura manitoba