Pubic louse

Natural Habitat

Exclusively found on humans; primarily inhabits the pubic area but can also be found in other coarse body hair like chest hair, eyebrows, or eyelashes.

Diet & Feeding

Obligate blood feeder; requires several blood meals daily from human hosts to survive.

Behavior Patterns

They are slow-moving and use specialized crab-like claws to grasp thick hair shafts. They undergo three nymphal stages before reaching adulthood and lay eggs (nits) that are glued to the base of the hair.

Risks & Benefits

Risks include intense itching (pruritus) and blue-gray skin discolorations (maculae caeruleae) caused by salivary enzymes. No known transmission of pathogens, but infestation often indicates the need for screening for other sexually transmitted infections (STIs).

Identified on: 6/10/2026