Sphaerolana

Sphaerolana is a genus of isopod crustaceans in the family Cirolanidae, all of which are endemic to Mexico.
The genus Sphaerolana contains the following species:

Sphaerolana affinis Cole & W. L. Minckley, 1970 –
Sphaerolana interstitialis Cole & W. L. Minckley, 1970 –
Sphaerolana karenae Rodriguez-Almaraz & Bowman, 1995 –

All three species are on the IUCN Red List as either vulnerable species or endangered species.