Isoperla lata Frison, 1942

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-

Isoperla lata Frison, 1942

Notes

Isoperla lata is currently known as the Dark Stripetail ( Stark et al. 2012). This species has been reported from Canada from mainland Labrador and Nova Scotia west to Ontario and in the USA from Maine in parallel fashion west to Minnesota plus southwest along the Appalachian Mountains to North Carolina and Tennessee ( Szczytko and Kondratieff 2015, DeWalt et al. 2024). Sandberg and Szczytko (1997) suggested a univoltine-slow larval life cycle for I. lata in central Wisconsin. In Quebec, adults have been reported from early May to late June ( Harper and Magnin 1969). The limited adult flight period data in New York of only early March (Fig. 38 ) is based on reared material. We report collections of this species from elevations ranging from 170-218 m asl (Fig. 39 ) from the Boquet River in Level IV Ecoregions Eastern Adirondack Foothills (58 ac) and Champlain Lowlands (83 b) (Fig. 42 c ). This species is likely more common in the state than collections indicate and is easily distinguished as larvae from other members of this genus by the distinct lacinia setation.

Figures

Figure 38. Adult flight period for 28 Perlodidae species in New York State. Red fill indicates positive adult collections while gray shaded areas indicate adults are likely present but not reported.

Figure 39. Elevation box plot for 28 Perlodidae species in New York State. Boxes indicate interquartile range, horizontal line in box represents median elevation, and outlliers are depicted with large circles.

Figure 42 c. Isoperla lata