Bug Identifier
Human Head Louse
Community identification

Human Head Louse

Pediculus humanus capitis

Order & Family
Order: Psocodea, Family: Pediculidae
Size
2-3 mm (roughly the size of a sesame seed)
See this bug in the Encyclopedia

Natural Habitat

Found exclusively on the human scalp and hair follicles, often near the ears and nape of the neck.

Diet & Feeding

Obligate parasites that feed 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 (nits) that are firmly glued to the hair shaft close to the scalp.

Risks & Benefits

Risks include intense itching, scalp irritation, and potential secondary skin infections from scratching. They are not known to transmit diseases, but they are highly contagious through head-to-head contact.