Body Louse (or Head Louse) Nit

Found exclusively on humans; nits are attached to hair shafts (head lice) or clothing fibers (body lice).

Strictly hematophagous; they feed on human blood multiple times a day.

Nits are cemented to surfaces by the female. They cannot jump or fly and are transmitted through direct contact or sharing of personal items like brushes or clothing.

Risks include intense itching (pediculosis) and skin irritation. Body lice, specifically, can transmit diseases like epidemic typhus, trench fever, and louse-borne relapsing fever. There are no ecological benefits.