Isoperla frisoni Illies

DeWalt, R. Edward & Grubbs, Scott A., 2011, Updates To The Stonefly Fauna Of Illinois And Indiana, Illiesia 7 (3), pp. 31-50 : 45

Isoperla frisoni Illies .

This species is known from Indiana north through the upper Great Lakes region and from North Carolina north through eastern Canada ( DeWalt et al. 2010). Frison (1937) originally described it as Isoperla truncata (a homonym) with a paratype from the Yellow River , a sand-bottomed stream in northern Indiana. This species has never been collected from Illinois , but could be present in the Kankakee and Rock River drainages.

We present a few new locations in Indiana , including one recent record. IN, LaGrange Co., Pigeon Creek at [CR] 1100 E, E Pigeon River Fish-Game Area , 41.6728, - 85.21492, 5/20/1972, ♀ ( PERC) ; LaPorte Co., Trail Creek , Michigan City, [41.7237, -86.8719], 6/21/1957, J. Lowe, 3♂ ( CNC) ; same location, 4/22/2007, R.E. DeWalt, 6N ( INHS) .