The order of insects that includes the bloodsucking lice of mammals, with some 450 species arranged in 6 families, of which 4 contain species of medical or veterinary importance: Haematopinus, Linognathus, and Solenopotes of domestic mammals, and the human sucking lice Pediculus humanus.
Origin
[G. anoplos, unarmed, + oura, tail]