| Specimen ID | 253902 |
| Group | Mollusks-Gastropods |
| Genus | Potamopyrgus |
| Species | antipodarum |
| Common Name | New Zealand mudsnail |
| State | IL |
| County | Lake |
| Locality | Lake Michigan, south of Waukegan Harbor |
| Mapping Accuracy | Accurate |
| HUC8 Name | Lake Michigan |
| HUC8 Number | 04190000 |
| HUC10 Name | Lake Michigan |
| HUC10 Number | 0419000002 |
| HUC12 Name | Lake Michigan |
| HUC12 Number | 041900000200 |
| Map | |
| Collection Day | 4 |
| Collection Month | 10 |
| Collection Year | 2007 |
| Year Accuracy | Actual |
| Potential Pathway | unknown |
| Status | established |
| Comments | In water approximately 7.5 m deep on a cement brick enclosed with a mesh cage. The brick had been in the water for 2 years and 3.5 months when retrieved. |
| Record Type | Personal communication |
| Verifier | Illinois Natural History Sturvey |
| Freshwater/Marine | Freshwater |
| Number Collected | 1 |
| Size | 4.4 mm |
