Body Louse or Head Louse Nymph (likely)

Scientific Name: Pediculus humanus humanus (Body Louse) or Pediculus humanus capitis (Head Louse)

Order & Family: Order: Phthiraptera, Family: Pediculidae

Size: Typically 1-2 mm for nymphs, growing to 2-4 mm for adults.

Body Louse or Head Louse Nymph (likely)

Natural Habitat

Inhabits human hosts; head lice are found on the scalp and hair, while body lice live in clothing and bedding, moving to the skin only to feed.

Diet & Feeding

Hematophagous (blood-feeding); they feed exclusively on human blood several times a day.

Behavior Patterns

They do not jump or fly but crawl rapidly. Females lay eggs (nits) cemented to hair shafts (head lice) or clothing seams (body lice). They tend to hide from light.

Risks & Benefits

Risks: Causes intense itching (pruritus) and skin irritation. Body lice can transmit diseases like typhus, trench fever, and relapsing fever. Head lice are mainly a nuisance but can lead to secondary skin infections from scratching. No ecological benefits.

Identified on: 2/23/2026