Why Is A Roly-poly Called A Roly-poly?
Why Is A Roly-poly Called A Roly-poly? The pillbug, Armadillidium vulgare (Latreille), is an isopod, a type of non-insect arthropod also known as a terrestrial crustacean. It is sometimes called a roly-poly due to its ability to roll into ball when disturbed (Figure 1). Is it rolly polly or roly-poly? Armadillidiidae is a family of