Amphinemura nigritta (Provancher). This widespread eastern Nearctic species was considered extirpated from the Shawnee Hills region of southern Illinois (DeWalt et al. 2005). The sole record of A. nigritta from Illinois was collected in 1932 from Massac County (Ricker 1952). These specimens have been missing from the INHS collection for decades, but were located in the Canadian National Collection as part of the W. E. Ricker collection. Many other INHS vials were found there as well. We have re-evaluated these specimens and find them to be A. varshava (Ricker). Although several papers report this species from Indiana (e.g. Grubbs 2004), extensive collecting across the state and examination of all important museum holdings (Table 1) has failed to produce either recent or historical material. Removal of this species from both state’s lists seems justified.

{"references": ["DeWalt, R. E. & B. D. Heinold. 2005. Summer emerging Ephemeroptera, Plecoptera, and Trichoptera of Abrams Creek, Great Smoky Mountains National Park. Proceedings of the Entomological Society of Washington, 107: 34 - 48.", "Ricker, W. E. 1952. Systematic studies of Plecoptera. Indiana University Publication Scientific Series, 18: 1 - 200.", "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 38, DOI: 10.5281/zenodo.4760399