Bug Identifier
Human Head Louse
Community identification

Human Head Louse

Pediculus humanus capitis

Order & Family
Phthiraptera: Pediculidae
Size
2.0 mm to 3.0 mm (roughly the size of a sesame seed).
See this bug in the Encyclopedia

Natural Habitat

Human scalp and hair, most commonly found near the nape of the neck and around the ears.

Diet & Feeding

Obligate hematophages; they feed exclusively on human blood several times a day.

Behavior Patterns

They are wingless and cannot jump or fly; they move by crawling from hair to hair. They lay eggs called nits which are glued to hair shafts close to the scalp.

Risks & Benefits

While they cause intense itching and social distress, they are not known to transmit diseases. Excessive scratching can lead to secondary bacterial skin infections.