Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
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Phthiraptera (Parasitic Lice)

Bird Louse Dog biting lice - Trichodectes canis bug with legs curled around hair on my wrist - Pediculus humanus Louse Louse found on a cat - Felicola subrostratus Louse found on white-tailed deer - Tricholipeurus deer lice? Poultry Lice?
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Psocodea (Barklice, Booklice, and Parasitic Lice)
No Taxon Phthiraptera (Parasitic Lice)
Synonyms and other taxonomic changes
Anoplura (sucking lice) and Mallophaga (chewing lice) were each considered to be a separate order in the past.
Life Cycle
Simple metamorphosis. In most species, females lay 50-150 eggs, attaching them to the host's hairs or feathers. Eggs usually hatch in about a week, and there are generally three nymphal instars. (1)
Internet References
Works Cited
1.Borror and DeLong's Introduction to the Study of Insects
Norman F. Johnson, Charles A. Triplehorn. 2004. Brooks Cole.