Isogenoides varians (Walsh)

DeWalt, R. Edward & Grubbs, Scott A., 2011, Updates To The Stonefly Fauna Of Illinois And Indiana, Illiesia 7 (3), pp. 31-50 : 47

Isogenoides varians (Walsh) .

This is a warmwater, riverine species known from Minnesota, south to Kansas and Mississippi and east to the Carolinas and Virginia (Sandberg & Stewart 2005). In Illinois, Frison (1935) presented two records, one male for Rock Island on the Mississippi River and another male from Golconda on the Ohio River. Sandberg & Stewart (2005) presented several additional records for the Wabash River at Mt. Carmel. In Indiana, there are a number of historical records from the East Fork and main stem White Rivers in southern Indiana ( Frison 1937). Sandberg & Stewart (2005) presented additional PERC records for the species from the Wabash River at Tippecanoe. The only recent record in the entire Midwest appeared to be from Iowa’s Cedar River ( Heimdal et al. 2004). We thought it was extirpated from the Midwest ( Grubbs 2004; DeWalt et al. 2005) until finding several exuviae along the Wabash River in Indiana.

IN, Fountain Co.; Wabash River , Attica at Potawatomie Park , 40.2942, -87.2942, 4/22-24/2010, R.E. DeWalt, M. Pessino, 11 exuviae ( INHS) .