Phthirus pubis (crab lice)

Images:

Adult:
http://www.k-state.edu/parasitology/625tutorials/Arthropods04.html

Phylogeny: Order Anoplura (sucking lice)

Metamorphosis: Incomplete

Geographical location: Cosmopolitan

Organs affected: Skin, particularly of the pubic region.

Symptoms and clinical signs: Saliva induces roseate elevated papules. Severe infestations lead to scarring, ulceration.

Diseases transmitted: None

Treatment/control: On pubic area, treat as for head lice. Nits and lice may be removed from eyelashes with forceps. Ophthalmic ointments of Eserine or of yellow oxides of mercury are both effective.