| Specimen ID | 116191 |
| Group | Mollusks-Bivalves |
| Genus | Dreissena |
| Species | polymorpha |
| Common Name | zebra mussel |
| State | IL |
| County | Pike |
| Locality | Illinois River (R.M. 60), upstream from Florence, IL |
| Mapping Accuracy | Accurate |
| HUC8 Name | Lower Illinois |
| HUC8 Number | 07130011 |
| HUC10 Name | Hurricane Creek-Illinois River |
| HUC10 Number | 0713001108 |
| HUC12 Name | Blue Creek |
| HUC12 Number | 071300110802 |
| Map | |
| Collection Day | 19 |
| Collection Month | 6 |
| Collection Year | 1991 |
| Year Accuracy | Actual |
| Potential Pathway | hitch hiker on small watercraft |
| Status | established |
| Record Type | Personal communication |
| Disposal | formalin |
| Museum Cat Number | Il.Nat.Hist.Surv.-Champaign |
| Verifier | K.Douglas Blodgett,IL Nat.Hist.Surv., Havana IL 62 |
| Freshwater/Marine | Freshwater |
| Number Collected | 1 |
| Year Class | adult |
| Size | 18.9 mm |
