Tags: Crustacean.
Iais is a genus of isopod crustaceans. Iais species are found in association with larger isopods of the family Sphaeromatidae usually on the ventral surface of the larger animal between the pereiopods and on the pleopods. They are native to Australasia and South America although Iais californica and its host Sphaeroma quoyanum have invaded California and I. californica was first described from Sausalito California. Nine species are recognised:Iais aquilei Coineau 1977Iais californica (H.