Sphaeroma quoianum
- kingdom: Animalia
- phylum: Arthropoda
- class: Malacostraca
- order: Isopoda
- family: Sphaeromatidae
- genus: Sphaeroma
- species: Sphaeroma quoianum
Alameda- Albany
- Arcata
- Bayside
- Bayview
- Black Point-Green Point
- Bolinas
- Brisbane
- Channel Islands Beach
- Corte Madera
- Crockett
- East Palo Alto
- Emeryville
- Hercules
- Marin City
- Morro Bay
- Newport Beach
- Pleasanton
- Port Hueneme
- Redwood City
- Richmond
- Rodeo
- San Mateo
- San Rafael
- Sausalito
- South San Francisco
- Strawberry
- Tiburon
- Vallejo
California- Hickam Housing
Hawaii- Bunker Hill
- Coos Bay
- North Bend
Oregon
United States