| Nominal Species (n = 24) | Present allocation (n = 24) | Ref. |
|---|---|---|
| Pisidium adamsi Stimpson, 1851 | Pisidium adamsi | 19 |
| Pisidium compressum Prime, 1852 | Pisidium compressum | 19 |
| Pisidium conventus Clessin, 1877 | Pisidium conventus | 19 |
| Pisidium cruciatum Sterki, 1895 | Pisidium cruciatum | 19 |
| Pisidium equilaterale Prime, 1852 | Pisidium equilaterale | 19 |
| Pisidium fallax Sterki, 1896 | Pisidium fallax | 19 |
| Pisidium ferrugineum Prime, 1852 | Pisidium ferrugineum | 19 |
| Pisidium fultoni Kuiper, 1983 | Pisidium fultoni | 7800 |
| Pisidium idahoense Roper, 1890 | Pisidium idahoense | 19 |
| Pisidium insigne Gabb, 1868 | Pisidium insigne | 19 |
| Pisidium milium Held, 1836 | Pisidium milium | 19 |
| Pisidium nitidum Jenyns, 1832 | Pisidium nitidum | 19 |
| Sphaerium nitidum Westerlund, 1876 | Sphaerium nitidum | 19 |
| Pisidium punctatum Sterki, 1895 | Pisidium punctatum | 19 |
| Pisidium rotundatum Prime, 1852 | Pisidium rotundatum | 19 |
| Pisidium sanguinichristi Taylor, 1987 | Pisidium sanguinichristi | 19 |
| Eupera singleyi Pilsbry | Eupera singleyi | 19 |
| Pisidium subtruncatum Malm, 1855 | Pisidium subtruncatum | 19 |
| Pisidium supinum Schmidt, 1850 | Pisidium supinum | 19 |
| Sphaerium transversum Say, 1829 | Musculium transversum | 75097 |
| Pisidium ultramontanum Prime, 1865 | Pisidium ultramontanum | 19 |
| Pisidium variabile Prime, 1852 | Pisidium variabile | 19 |
| Pisidium ventricosum Prime, 1851 | Pisidium ventricosum | 19 |
| Pisidium walkeri Sterki, 1895 | Pisidium walkeri | 19 |