| ichthyomyzon unicuspis | | USA: Wisconsin, Sauk, Wisconsin River just below Prairie du Sac dam | | 339770113 |
| ichthyomyzon unicuspis | | USA: Wisconsin, Brown, Lake Michigan | | 339770115 |
| ichthyomyzon unicuspis | | USA: Wisconsin, Brown, Lake Michigan | | 339770117 |
| ichthyomyzon unicuspis | | USA: Wisconsin, Brown, Lake Michigan | | 339770119 |
| ichthyomyzon unicuspis | | USA: Wisconsin, Brown, Lake Michigan | | 339770121 |
| ichthyomyzon unicuspis | | USA: Peshtigo River, Marinette County, WI | | 698352316 |
| ichthyomyzon unicuspis | | USA: Peshtigo River, Marinette County, WI | | 722489862 |