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At one time the scientific name for one kind of woodlouse was actually Armadillo (it's now been changed to Armadillidium). This is the kind which can roll up --- many other kinds cannot.
But here's an odd coincidence:
Armadillo babies are monozygotic -- all identical, from the same egg. This means that their litters are always the same sex.
Woodlice have no genetic difference between male and female. Instead the females are the ones which carry a harmless bacterium. The mother woodlouse either allows the eggs to become "infected" and become female, or does not, when they become male. As in the mammalian armadillo, the whole woodlouse brood is therefore either all male or all female. And they look just like tiny armadillos!