Armadillidiidae
plural noun
Ar·ma·dil·li·di·i·dae
ˌärməˌdiləˈdīəˌdē
: a cosmopolitan family (type genus Armadillidium) of terrestrial isopods having arched bodies that can be rolled into a ball and including all the wood lice
Word History
Etymology
New Latin, from Armadillidium, type genus (from Armadillo + -idium) + -idae; from the habit of rolling the body up into a ball when touched