Crab louse

Crab louse, or pubic louse - commonly referred to as "crabs" - are a parasitic insect exclusive to humans, that feed exclusively on blood. They are typically found in pubic hair around the genitals, but can also effect other areas of the body with hair, such as eyelashes.

Crab louse can be distinguished from other species of louse by their almost-round body. Adult crab louse are typically 1-2mm long, and are smaller than the body louse and head louse. The term "crab louse" comes from their much thicker two front legs that are equipped with two large claws.