phthir = lice; aptera = wingless)
Amblycera, Ischnocera, Anoplura and Rhynchopthirina
Lice are small, flattened ectoparasites infrequently encountered
by the general naturalist. They were formerly divided into two orders,
the chewing lice (like the feather lice shown below) and the sucking lice
(like human head and body lice).
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