Community identification
Human Head Louse
Pediculus humanus capitis
- Order & Family
- Order: Psocodea / Family: Pediculidae
- Size
- 2.0 mm to 3.0 mm (about the size of a sesame seed)
Natural Habitat
The human scalp, primarily living on and around the hairs of the head.
Diet & Feeding
Obligate ectoparasite; feeds exclusively on human blood several times a day.
Behavior Patterns
Wingless insects that cannot jump or fly; they move by crawling. Females lay eggs (nits) and cement them to the base of hair shafts. They survive only a short time (1-2 days) if separated from a human host.
Risks & Benefits
Risk: Causes intense itching and scalp irritation. They are not known to spread disease, but secondary skin infections can occur from scratching. Benefit: None to humans or the ecosystem.