Return to Article Details <strong>Additions to the millipede family Caseyidae Verhoeff, 1909. VI. Proposal of the new subfamily Opioninae, new species and records of the genus <em>Opiona</em> Chamberlin, 1951 and synonymy of <em>Speyosia</em> Causey, 1963 with <em>Opiona</em> (Diplopoda, Chordeumatida, Striariidea)</strong> Download Download PDF