Alloperla chloris Frison, 1934

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-

Alloperla chloris Frison, 1934

Notes

Alloperla chloris is commonly referred to as the Triangular Sallfly ( Stark et al. 2012). This species has an Appalachian distribution from southeastern Canada south to Alabama and Georgia ( Surdick 2004, DeWalt et al. 2024). Fishbeck (1987) and DeWalt et al. (2016) reported this species from small streams in the glaciated northeastern corner of Ohio where adults were taken from May to August. Most records of this species are from eastern areas of New York (Fig. 25 f ), but it is likely more abundant and widespread than current collections indicate. In New York, adults have been collected between early June and mid-August (Fig. 26 ) from upland streams and rivers at elevations ranging from 97-568 m asl (Fig. 27 ).

Figures

Figure 26. Adult flight period for 19 Chloroperlidae species in New York State. Red fill indicates positive adult collections while gray shaded areas indicate adults are likely present but not reported.

Figure 27. Elevation box plot for 19 Chloroperlidae species in New York State. Boxes indicate interquartile range, horizontal line in box represents median elevation, and outlliers are depicted with large circles.

Figure 25 f. Alloperla chloris