Isopoda

order of crustaceans Isopoda (Isopoda) is an order comprising closely related families of organisms. It contains 19 families with 37 known species. Key family groups include Aegidae, Armadillidae, Armadillidiidae, Asellidae, Cirolanidae, and Cylisticidae. It belongs to Crustaceans (Malacostraca).