Ptyoiulus

Ptyoiulus is a genus of millipedes in the family Parajulidae. There are about seven described species in Ptyoiulus.

Species
These seven species belong to the genus Ptyoiulus:
 * Ptyoiulus conveanus Chamberlin, 1943
 * Ptyoiulus coveanus Chamberlin, 1943
 * Ptyoiulus ectenes (Bollman, 1887)
 * Ptyoiulus georgiensis Chamberlin, 1943
 * Ptyoiulus impressus (Say, 1821)
 * Ptyoiulus montanus
 * Ptyoiulus pennsylvanicus (Brandt, 1840)