Pubic louse (or Crab louse)

Found primarily in human pubic hair, but can also inhabit other coarse body hair such as eyelashes, eyebrows, chest hair, and armpits.

Obligate hematophage: feeds exclusively on human blood several times a day.

They are slow-moving and use specialized 'crab-like' claws to grasp coarse hair. They go through three stages: nit (egg), nymph, and adult. They cannot jump or fly and usually require direct body contact for transmission.

Risks include intense itching (pruritus due to an allergic reaction to saliva) and secondary skin infections from scratching. They are not known to transmit systemic diseases but are considered a common sexually transmitted infestation (STI).