Hansonoperla appalachia Nelson, 1979

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-

Hansonoperla appalachia Nelson, 1979

Notes

Hansonoperla appalachia is currently referred to as the Appalachian Stone ( Stark et al. 2012). This is an Appalachian-distributed species that has been patchily reported from New Hampshire south to Tennessee and South Carolina ( Stark 2004, DeWalt et al. 2024). NatureServe (2024) recently classified this species as vulnerable to extinction or extirpation throughout its North American range. Little is known about the life history of this species, except that larvae may spend most of their time in the hyporheic zone. Kirchner and Kondratieff (1985) collected pre-emergent larvae from tree roots exposed by undercut stream banks. Kondratieff and Kirchner (1996) reported adults of this species present from mid-May to mid-June. The adult flight period for this species is currently unknown for New York (Fig. 33 ). The single distinctive larva known from New York was collected from a small stream at 454 m asl (Fig. 34 ) in Level IV Ecoregion Catskills Transition (60 c) (Fig. 36 b ) by Martin Ronsenfeld of the New York City Department of Environmental Protection on September 9, 2004, representing a new state record.

Figures

Figure 33. Adult flight period for 18 Perlidae species in New York State. Red fill indicates positive adult collections while gray shaded areas indicate adults are likely present but not reported.

Figure 34. Elevation box plot for 18 Perlidae species in New York State. Boxes indicate interquartile range, horizontal line in box represents median elevation, and outlliers are depicted with large circles.

Figure 36 b. Hansonoperla appalachia