| Nominal Species (n = 4) | Present allocation (n = 4) | Ref. |
|---|---|---|
| Penetrantia brevis Silén, 1946 | Penetrantia brevis | 3477 |
| Penetrantia concharum Silen, 1946 | Penetrantia concharum | 19 |
| Penetrantia densa Silen, 1946 | Penetrantia densa | 19 |
| Penetrantia parva Silen, 1946 | Penetrantia parva | 19 |