| Species name | Common name | Distribution | Max. Length (cm) |
|---|---|---|---|
| Theta araneosa (Watson, 1881) |
Western Atlantic | 0.56 | |
| Theta chariessa (Watson, 1881) |
Atlantic Ocean | 2.16 | |
| Theta lanceata (Dall, 1927) |
Western Atlantic | 0.3 | |
| Theta lyronuclea (Clarke, 1959) |
Western Atlantic | 0.93 | |
| Theta porcellana (Watson, 1886) |
Western Atlantic | 2.23 | |
| Theta pudens (Watson, 1881) |
Western Atlantic | 0.53 | |
| Theta spicea (Watson, 1881) |
Western Atlantic | 0.64 | |
| Theta vayssierei (Dautzenberg, 1925) |
Atlantic Ocean | 5.3 |