Trinchesia lagunae
(O'Donoghue, 1926)
Also known as: Cuthona lagunae

Photographed by: Gary McDonald
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Opisthobranchia |
| Order: | Nudibranchia |
| Suborder: | Aeolidina |
| Family: | Tergipedidae |
| Species: | Trinchesia lagunae |
Locality:
- USA
- California (9) Feb, Apr, May, Jun, Dec
- Catalina Island (3) Apr, May