Pill Millepede

Pill Millipede curled: Pill millipedes make up two orders of millipedes, often grouped together into a single superorder, Oniscomorpha. The name Oniscomorpha refers to the resemblance of pill millipedes to certain woodlice, namely the pillbugs of the family Armadillidiidae, also called "potato bugs", "doodlebugs", or "roly-polies". However, they are only distantly related.

Pill millipedes are short compared to other millipedes, with only eleven to thirteen body segments, and are capable of rolling into a ball when disturbed. This ability may however have evolved separately in each of the two orders, making it a case of convergent evolution, rather than homology. Pill millipedes are detritivorous, feeding on decomposing plant matter.