Tropisternus affinis
- kingdom: Animalia
- phylum: Arthropoda
- class: Insecta
- order: Coleoptera
- family: Hydrophilidae
- genus: Tropisternus
- species: Tropisternus affinis
Carmel-by-the-Sea- Descanso
- Pasadena
California
United States
Tropisternus affinis Carmel-by-the-Sea Descanso Pasadena