Pubic louse

Primarily human pubic hair, but can also be found in other coarse body hair such as eyelashes, eyebrows, beard, or armpit hair.

Obligate blood-feeders; they feed exclusively on human blood several times a day.

They are wingless and slow-moving, typically remaining attached to hair shafts. They are transmitted through close physical contact or via shared clothing, towels, and bedding. Their eggs (nits) are glued to hair shafts.

Risks include intense itching (pruritus) due to an allergic reaction to their saliva, and skin irritation or secondary bacterial infections from scratching. They do not transmit diseases. Benefit: none; they are parasites.