Opiona

Opiona is a genus of millipedes in the family Caseyidae. There are about 16 described species in Opiona.

==Species== These 16 species belong to the genus Opiona: Opiona berryessae Gardner & Shelley, 1989 Opiona bifurcata Gardner & Shelley, 1989 Opiona casualis Gardner & Shelley, 1989 Opiona columbiana Chamberlin, 1951 Opiona communis Gardner & Shelley, 1989 Opiona confusa Gardner & Shelley, 1989 Opiona distincta Gardner & Shelley, 1989 Opiona exigua Gardner & Shelley, 1989 Opiona facetia Gardner & Shelley, 1989 Opiona fisheri Gardner & Shelley, 1989 Opiona goedeni Gardner & Shelley, 1989 Opiona gonopods Opiona graeningi Opiona hatchi Causey, 1954 Opiona scytonotoides Gardner & Shelley, 1989 Opiona siliquae Causey, 1963