Uznawany jako synonim Pylodictis olivaris (Rafinesque, 1818)
- Gilbert, Carter R.. 1998. "Type catalog of Recent and fossil North American Freshwater fishes: families Cyprinidae, Catostomidae, Ictaluridae, Centrarchidae and Elassomatidae". Florida Museum of Natural History, Special Publication No. 1. 1-284 (ffm00083)
Oryginalny opis jako Silurus nebulosus:
- Rafinesque, Constantine Samuel. 1820. "Description of the Silures or catfishes of the River Ohio". Quarterly Journal of Science, Literature and the Arts. 9:48-52 (ffm00230)