| Confirmed in this study |
Records |
FWGNA |
| Leptoxis carinata | 365 |
I-5 |
| Campeloma decisum |
241 |
I-5 |
| Physa acuta |
232 |
I-5 |
| Menetus dilatatus | 199 |
I-5 |
| Helisoma anceps | 183 | I-5 |
| Ferrissia fragilis | 158 |
I-5 |
| Lymnaea columella | 128 |
I-5 |
| Lymnaea humilis |
100 |
I-5 |
| Pleurocera virginica | 84 | I-5 |
| Lyogyrus granum |
69 |
I-5 |
| Physa gyrina | 62 | I-5 |
| Ferrissia rivularis | 57 |
I-5 |
| Laevapex fuscus | 53 | I-5 |
| Gyraulus parvus | 42 | I-5 |
| Pleurocera proxima |
39 |
I-5 |
| Helisoma trivolvis |
37 | I-5 |
| Physa pomilia | 35 | I-4 |
| Amnicola limosa | 34 | I-5 |
| Pleurocera catenaria dislocata P. catenaria catenaria (combined) |
18 8 |
I-5 |
| Fontigens orolibas | 23 | I-4* |
| Fontigens nickliniana | 21 |
I-4 |
| Physa carolinae |
21 |
I-4 |
| Pleurocera shenandoa | 20 |
I-3p |
| Cipangopaludina japonica |
15 |
I-4 |
| Somatogyrus virginicus | 8 | I-4 |
| Lioplax subcarinata | 7 |
I-4 |
| Littoridinops tenuipes |
7 |
I-4 |
| Bithynia tentaculata | 5 | I-3p |
| Promenetus
exacuous |
5 |
I-4 |
| Planorbula armigera |
3 |
I-4 |
| Fontigens morrisoni | 3 | I-2 |
| Gillia altilis | 3 | I-4 |
| Hebetancylus excentricus | 2 |
I-3p |
| Fontigens bottimeri | 2 |
I-3* |
| Fontigens tartarea |
2 |
I-2 |
| Valvata tricarinata | 2 |
I-3p |
| Viviparus georgianus | 1 |
I-4 |
| Holsingeria unthanksensis |
1 | I-1 |
| Gyraulus deflectus | 1 |
I-3p |
| Pomatiopsis lapidaria | 1 | I-3p |
| Cipangopaludina chinensis | 0 | I-4 |
| Aplexa hypnorum |
0 | I-1p |
| Valvata bicarinata | 0 | I-4 |
| TOTAL | 2,294 |