出典:Wikipedia
出典:『Wikipedia』 (2011/07/12 21:12 UTC 版)
The head louse (Pediculus humanus capitis) is an obligate ectoparasite of humans. Head lice are wingless insects spending their entire life on human scalp and feeding exclusively on human blood. Humans and chimpanzees are the only known hosts of this specific parasite, but many other species of lice, which infest most orders of mammals and also birds, are known.