Ilybius biguttulus (Germar, 1824)
| List of Coleoptera collected in Colorado in june, july and august, 1876 by the Kansas University scientific expedition Snow Francis Huntington (1877) Transactions of the Kansas Academy of Science, Topeka 5: 15-20 | |
| Coleoptera collected at Windsor, Broome Co., N.Y., 26 May to 5 June, 1918, with notes and descriptions H Notman (1920) Journal of the New York Entomological Society 28: 178-194 |