Thrassis acamantis- Thrassis alpinus
- Thrassis arcuatus
- Thrassis aridis
- Thrassis arizonensis
- Thrassis augustsoni
- Thrassis bacchi
- Thrassis brennani
- Thrassis campestris
- Thrassis fotas
- Thrassis fousti
- Thrassis francisi
- Thrassis gladiolis
- Thrassis gladiolus
- Thrassis jellisoni
- Thrassis pandorae
- Thrassis peninsularis
- Thrassis petiolatus
- Thrassis princei
- Thrassis rockwoodi
- Thrassis rockwoodie
- Thrassis setosis
- Thrassis sierrae
- Thrassis spenceri
- Thrassis stanfordi