| Specimen ID | State | County | Locality | Year | HUC Number | Drainage Name | Status |
| 1529809 | OH | Ottawa | East Harbor State Park | 2017 | 04260000 | Lake Erie | established |
| 1468693 | OH | Lucas | Lake Erie, USEPA Great Lakes National Program Office (GLNPO) monitoring station ER60 | 2016 | 04260000 | Lake Erie | established |
| 1468700 | OH | Ottawa | Lake Erie, East Harbor | 2018 | 04260000 | Lake Erie | established |
| 1468697 | OH | Lucas | Lake Erie, USEPA Great Lakes National Program Office (GLNPO) monitoring station ER60 | 2018 | 04260000 | Lake Erie | established |
| 1529811 | OH | Erie | Old Woman Creek | 2018 | 04100012 | Huron-Vermilion | established |
| 1529810 | OH | Lucas | Ottawa National Wildlife Refuge | 2018 | 04100010 | Cedar-Portage | established |
| 1529857 | OH | Ottawa | East Harbor State Park | 2018 | 04260000 | Lake Erie | established |
Citation for this information:
U.S. Geological Survey, 2026,
Mesocyclops pehpeiensis: U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, https://nas.er.usgs.gov, Access Date: 2/21/2026