Louse (likely Head or Body Louse)

Found exclusively on the human body, specifically the scalp (head lice) or within clothing and bedding (body lice).

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

They are wingless and crawl between hosts through direct contact. They lay eggs (nits) which are glued to hair shafts or clothing fibers. They cannot fly or jump.

Risk: Causes intense itching and scalp irritation. Body lice can transmit serious bacterial diseases like epidemic typhus and trench fever. Benefit: None to humans; they are obligate parasites.