Human Body Louse vs Slender Pigeon Louse

Side-by-side species comparison

Attribute Human Body Louse Slender Pigeon Louse
Scientific Name Pediculus humanus humanus Columbicola columbae
Order Phthiraptera Phthiraptera
Family Pediculidae Philopteridae
Size 2.5-3.5 mm 2-3 mm
Habitat Indoors Farmland
Diet Blood Feeders Omnivores
Regions Europe, Asia, Africa, North America, South America Europe, Asia, Africa, North America, South America, Oceania
Conservation Least Concern Least Concern

Human Body Louse

Closely related to the head louse but lives in clothing rather than on hair. It is the vector for epidemic typhus, trench fever, and relapsing fever.

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Did You Know?

Body lice are believed to have evolved from head lice when humans first began wearing clothing roughly 70,000 to 170,000 years ago.

Slender Pigeon Louse

A long slender louse found between the barbs of wing and tail feathers of pigeons and doves. It is one of the most studied louse-host systems in biology.

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Did You Know?

This louse has become a model organism for studying coevolution, as its evolutionary tree closely mirrors that of its pigeon host species.