Calothrix pilosa
- kingdom: Bacteria
- phylum: Cyanobacteria
- class: Cyanophyceae
- order: Nostocales
- family: Rivulariaceae
- genus: Calothrix
- species: Calothrix pilosa
Utwe
Kosrae
Micronesia, Federated States Of
San Jose Village
Tinian
Northern Mariana Islands
Hale‘iwa
Hawaii
United States