Agnetina capitata (Pictet). This species is distributed from the Ozarks east to the Appalachian Mountains and north to eastern Canada (Stark 2004; DeWalt et al. 2010). It tends to inhabit cooler waters than its close relative A. flavescens (Walsh), with which it has often been confused, especially in the nymphal stage (Frison 1935). It appears that this species may still persist in northern Illinois only in the Pecatonica River. Grubbs (2004) tentatively listed this species from Indiana and suggested that it might be present in northern tier counties in the state. We present several unpublished records documenting the species in northeastern Illinois and in Indiana, two of which are relatively recent records. IL, Cook Co., DesPlaines River, Glendon Park (a.k.a. River Grove), [41.92925, -87.84516], 6/21/1903, W.J. Gerhard, ♀ (FMNH); Kankakee Co., Momence, [41.1601, - 87.66306], 10/20/1939, C.O. Mohr, B.D. Burks, 7N (INHS); LaSalle Co., Illinois River, Ottawa, [41.34195, -88.8431], 7/21/1901, C. A. Hart, 2 exuviae (INHS); Stephenson Co., Pecatonica River, at Brewster public boat ramp, 1.2 mi E Winslow, [42.495, -89.768], 9/5/1976, R. Singer, L. Johnson-Singer, 2N (INHS); IN, Elkhart Co., St. Joseph River, near Bristol, 41.7219, -85.8176, 7/5/1947, W.E. Ricker, ♀ (CNC); Newton Co., Willow Slough State Fish and Wildlife Area, 40.9834, -87.49477, 10/21/1978, D. Bongsten, N (PERC).

{"references": ["Stark, B. P. 2004. Perlidae (The Stones). Pages 61 - 148. In: Stark, B. P. & B. J. Armitage (editors). The stoneflies (Plecoptera) of eastern North America. Volume II. Chloroperlidae, Perlidae, and Perlodidae (Perlodinae). Bulletin of the Ohio Biological Survey, New Series, Volume 14. Ohio Biological Society, Columbus, Ohio. 192 pp.", "DeWalt, R E., U. Neu-Becker and G. Stueber. 2010. Plecoptera Species File Online. Version 1.1 / 4.0. 12 / 8 / 2010. http: // Plecoptera. SpeciesFile. org.", "Frison, T. H. 1935. The stoneflies, or Plecoptera, of Illinois. Illinois Natural History Survey Bulletin, 20: 281 - 467.", "Grubbs, S. A. 2004. Studies on Indiana stoneflies (Plecoptera), with an annotated and revised state checklist. Proceedings of the Entomological Society of Washington, 106: 865 - 876."]}

Published as part of DeWalt, R. Edward & Grubbs, Scott A., 2011, Updates To The Stonefly Fauna Of Illinois And Indiana, pp. 31-50 in Illiesia 7 (3) on page 42, DOI: 10.5281/zenodo.4760399