| Confirmed in this study |
Records |
NatureServe |
Stewart & Dillon (2004) |
| Physa acuta |
184 |
Physella acuta, P. heterostropha | Physella acuta |
| Menetus dilatatus | 165 |
Micromenetus dilatatus, M. brogniartianus |
Micromenetus dilatatus, M. brogniartianus |
| Leptoxis carinata | 161 |
Leptoxis carinata | Leptoxis carinata |
| Lymnaea columella | 96 |
Pseudosuccinea columella | Pseudosuccinea columella |
| Ferrissia rivularis | 91 |
Ferrissia rivularis | Ferrissia rivularis |
| Campeloma decisum |
89 |
Campeloma decisum | Campeloma decisum |
| Lymnaea humilis |
87 |
Fossaria humilis, F. dalli, F. exigua, F. obrussa, F. parva |
Fossaria spp. |
| Helisoma anceps |
78 |
Helisoma anceps | Helisoma anceps |
| Lyogyrus granum |
66 |
Lyogyrus granum | Lyogyrus granum |
| Physa pomilia |
51 |
Physella hendersoni | - |
| Physa gyrina |
46 |
Physella gyrina, P. ancillaria | Physella gyrina |
| Goniobasis virginica |
37 |
Elimia virginica | Elimia virginica |
| Gyraulus parvus |
35 | Gyraulus parvus | Gyraulus parvus |
| Ferrissia fragilis |
35 |
Ferrissia fragilis | Ferrissia fragilis |
| Laevapex fuscus |
30 |
Laevapex fuscus, L. diaphanus | Laevapex fuscus |
| Goniobasis proxima |
28 |
Elimia proxima, E. symmetrica | Elimia proxima |
| Amnicola limosa |
28 |
Amnicola limosus | Amnicola limosus |
| Physa species A |
21 |
- | - |
| Goniobasis semicarinata |
19 |
- | Elimia semicarinata |
| Goniobasis
catenaria catenaria |
16 |
Elimia catenaria | Elimia catenaria |
| Fontigens nickliniana |
16 |
Fontigens nickliniana | Fontigens nickliniana |
| Helisoma trivolvis |
14 |
Planorbella trivolvis | Planorbella trivolvis |
| Somatogyrus virginicus |
8 |
Somatogyrus virginicus, S. pennsylvanicus | Somatogyrus virginicus |
| Fontigens orolibas |
6 |
Fontigens orolibas | Fontigens orolibas |
| Bellamya japonica |
6 |
- | - |
| Littoridinops tenuipes |
6 |
Littoridinops tenuipes | Littoridinops tenuipes |
| Promenetus
exacuous |
5 |
Promenetus exacuous | Promenetus exacuous |
| Goniobasis catenaria dislocata |
4 |
Elimia dislocata | - |
| Hebetancylus excentricus | 2 |
- | - |
| Fontigens morrisoni |
2 |
Fontigens morrisoni | Fontigens morrisoni |
| Fontigens bottimeri |
1 |
Fontigens bottimeri | Fontigens bottimeri |
| Bithynia tentaculata |
1 |
Bithynia tentaculata | Bithynia tentaculata |
| Viviparus georgianus |
1 |
Viviparus georgianus | Viviparus georgianus |
| Gyraulus deflectus |
1 |
Gyraulus deflectus | Gyraulus deflectus |
| Planorbula armigera |
1 |
Planorbula armigera | Planorbula armigera |
| - | - | Cipangopaludina chinensis | Cipangopaludina chinensis |
| - | - | Pomatiopsis lapidaria | Pomatiopsis lapidaria |
| - | - | Lioplax subcarinata | Lioplax subcarinata |
| - | - | Gillia altilis | Gillia altilis |
| - | - | Holsingeria species 1 | Holsingeria species 1 |
| - | - | Aplexa elongata | Aplexa elongata |
| - | - | Ferrissia parallela | Ferrissia parallela |
| - | - | Stagnicola neopalustris | Stagnicola neopalustris |
| - | - | Valvata tricarinata | Valvata tricarinata |
| - | - | Valvata bicarinata | Valvata bicarinata |