Community identification
Human Head Louse Egg (Nit)
Pediculus humanus capitis
- Order & Family
- Phthiraptera: Pediculidae
- Size
- Nits are approximately 0.8 mm long; adults are 2-3 mm long.
Natural Habitat
Found exclusively on the human scalp, typically attached to hair shafts near the skin surface.
Diet & Feeding
Hematophagous; they feed exclusively on human blood several times a day.
Behavior Patterns
The female louse glues eggs (nits) to hair shafts. They cannot jump or fly and are transmitted through direct head-to-head contact.
Risks & Benefits
Causes intense itching and scalp irritation. While they do not spread disease, secondary bacterial infections can occur from scratching. They provide no known ecosystem benefits.