can you spot the little guys on this dirty porch step? here is one zoomed in: a bristle millipede, Polyxenus lagurus. there are five here (and two ants, three springtails, and a baby isopod).
their binomial name roughly translates to Bizarre Bunnytail. (if only myriapods could afford cutesy common names maybe people would like them more!)
within the class Diplopoda (millipedes), polyxenidans are only distantly related to the roundbacked and flatback types that are more familiar.
accordingly their anatomy is pretty distinct at a glance—in addition to having relatively few segments, polyxenidans lack a hard exoskeleton and have no poison glands for defense. instead, the hair in their little cottontails has microscopic hooks that lock onto multiple setae hairs of an ant or other predator, Velcro-ing them sometimes to the point of immobility!
they’re also remarkably perceptive and hard to sneak up on! I spent a few minutes chasing them across a couple inches of slate while they hauled their fluffy tails away from me.
so tiny! so fuzzy! so perfect