Bug Identifier
Head Louse
Community identification

Head Louse

Pediculus humanus capitis

Order & Family
Order: Psocodea; Family: Pediculidae
Size
2 mm to 3 mm in length
See this bug in the Encyclopedia

Natural Habitat

Human scalp and hair

Diet & Feeding

Obligate ectoparasite that feeds exclusively on human blood

Behavior Patterns

Lice crawl but cannot hop or fly; they glue their eggs (nits) to the base of hair shafts. The life cycle consists of three stages: egg, nymph, and adult.

Risks & Benefits

Risks include intense itching, allergic reactions to bites, and secondary skin infections from scratching. They are not known to transmit systemic diseases but are a significant public health nuisance.