| Family | genus | species | author | Type Number | Category |
| Withiidae | Aisthetowithius | rossi | Beier | 9380 | holotype |
| Withiidae | Balanowithius | egregius | Beier | 8677 | syntypes, 2 |
| Withiidae | Cryptowithius | inconspicuus | Beier | 9381 | holotype |
| Withiidae | Dolichowithius | argentinus | Beier | 8680 | holotype |
| Withiidae | Parawithius | incognitus | Beier | 8690 | holotype |
| Withiidae | Parawithius | nobilis ecuadoricus | Beier | 8691 | syntypes, 6 |
| Withiidae | Parawithius | rufeolus | Beier | 8692 | syntypes, 5 |
| Withiidae | Parawithius | schlingeri | Beier | 8693 | holotype |
| Withiidae | Parawithius | similis | Beier | 8694 | syntypes, 3 |
| Withiidae | Withius | cactorum | Chamberlin | 1293 | holotype |