Key to the species of Onomeris

The pill millipede fauna of America is still relatively little known. Careful examination of the telopods of any Glomerida specimen found in America is therefore necessary to identify the species. For example, an undescribed genus co-occurs with O. sinuata and has similar colouration and size. Additional undescribed Glomerida species probably occur in the eastern United States.

1. Posterior margin of anal shield in males medially strongly concave (Fig. 5 E). Tibial process of telopod slender, not tapering towards tip; tibia without trichostele (Fig. 5 B)............................................................... 2

- Posterior margin of anal shield in males medially only very weakly concave. Tibial process of telopod triangular, basally wide, apically tapering; tibia with trichostele (Figs 7 C, D). Cumberland Plateau, NW Alabama to Virginia............. O. sinuata

2. Syncoxital lobe of telopod subtrapeziform (Fig. 3 B). Third antennomere 2x as long as second, sixth antennomere 2.1 times longer than wide (Fig. 1 A). Known from Alabama, Georgia and Mississippi............................ O. underwoodi

- Syncoxital lobe of telopod bilobed (Fig. 6 C). Third antennomere 1.5x as long as second, sixth antennomere 2.5 times longer than wide. Known from Virginia, Georgia and North Carolina......................................... O. australora