Isogenoides doratus (Frison)

Grubbs, Scott A., Pessino, Massimo & DeWalt, R. Edward, 2012, Michigan Plecoptera (Stoneflies): Distribution Patterns And An Updated Species List, Illiesia 8 (18), pp. 162-173 : 170-171

Isogenoides doratus (Frison)

Collection records. USA, Michigan: Lake Co., Pere Marquette River, near Baldwin , 43.8574, -85.8518, 9.V.1940, T.H. Frison and H.H. Ross, nymph, exuviae (INHS); same but 10.V.1940, 2♂, ♀ (INHS); Pine River , Walker Bridge, Manistee National Forest, 44.1126, -85.6831, 31.V.1938, O.H. Clark, ♂ (INHS), same but 10.IV.1999, B.C. Kondratieff and J.B. Sandberg, ♂, ♀ (reared) ( Sandberg and Stewart 2005); Pine River , Lincoln Bridge Campground, Manistee National Forest, 44.1336, -85.6960, 27.V.1998, S.A. Grubbs, 2♀ (WKU).

Comments. This sporadically-distributed species is known from British Columbia east to Quebec ( Sandberg & Stewart 2005, DeWalt et al. 2012a). The few records from Michigan are from the southern edge of the northern Lower Peninsula. The relativelyrecent records (1998 and 1999) from the Pine River provided ample evidence this uncommon species still persists in the state.