Pteronarcys pictetii Hagen

DeWalt, R. Edward & Grubbs, Scott A., 2011, Updates To The Stonefly Fauna Of Illinois And Indiana, Illiesia 7 (3), pp. 31-50 : 48

Pteronarcys pictetii Hagen .

This species is widespread in midwestern North America and extends westward to Colorado, South Dakota, and Manitoba ( Nelson 1971). Frison (1935) listed this species as P. nobilis (Hagen) . Frison (1937) later found the type of P. nobilis actually represented P. dorsata and that all adult Illinois specimens known at that time belonged to P. pictetii . DeWalt et al. (2005) accepted that this is still the only Pteronarcys species in Illinois. Grubbs (2004) named six counties where the species had been found in Indiana, mostly in the White and Wabash River drainages.

We present several additional adult records for Illinois and Indiana. IL, Mason Co., Sangamon River , 3 km NW Oakford at IL-97, 3/31/1999, J.E. Petzing, M.J. Dreslik, ♂ ( INHS) ; Vermilion Co., Middle Fork Vermilion River , Kickapoo State Park , 40.137042, -87.745741, 4/25/2009, R.E. DeWalt, S.K. Ferguson, M. Pessino, ♂, ♀ ( INHS) ; IN, Elkhart Co,. 6/1986, R.M. Martin, ♀ ( PERC) ; Jasper Co., 5/11/1971, ♀ ( PERC) ; Pulaski Co., Tippecanoe River , Winamac , 41.0555, -86.5994, 4/29/2006, R.E. DeWalt, S.K. Ferguson, ♀ (reared) ( INHS) ; IN, Tippecanoe Co., [ Wabash River ], West Lafayette , 4/16/1967, J.D. Hacker, blacklight, ♂ ( BYU) .