Isoperla richardsoni Frison .

This species is known from Iowa east to Connecticut (DeWalt et al. 2010). Described initially from Illinois (Frison 1935), it has since been extirpated from the state (DeWalt et al. 2005). It has not been reported from Indiana, but was listed as a likely species to find with more collecting in the northern portion of the state (Grubbs 2004). We have located specimens collected in Indiana, representing a new state record, but we have yet contemporaneous material.

IN, Monroe Co. Bloomington, [39.16528, -86.52639], 5/3/1938, Tinsley, ♀ (CNC); Pike Co., East Fork White River, Rogers, [38.5391, -87.2233], 4/16/1936, H.H. Ross, C.O. Mohr, 5 N (INHS) ; same but T.H. Frison, 4/21/1936, C.O. Mohr, ♂ (CNC); same but C.O. Mohr, B.D. Burks, 6/2/1936, ♀ (CNC) .