Skip to main content

What do crab lice, pubic lice and "crabs" look like?

Pubic lice are sometimes called crab lice, or simply "crabs" because of their overall body shape and the crab-like claws on the back two pairs of legs (see drawing left). The claws are adapted to hanging onto the relatively course hairs of the groin, armpit, chest and sometimes eyelashes where these insects live. See this page at our 'Bugs site for a color photograph of a pubic louse shortly after feeding.

Pubic lice are very small insects (less than 1/10") that bite to feed on blood. Their bites results in very itchy lesions but pubic lice are not important in disease transmission.

Pubic lice eggs are laid on the hair and, like head lice, removal of these eggs, or nits, is important for effective treatment. Treatment should include nit combing and use of medicated lice shampoo or lotion.

Pubic lice infestations are highly treatable and should be no reason for panic. Since pubic lice can be transferred during sexual contact, partners of infested individuals should be treated as well.

__________

Comments

Popular posts from this blog

Tiny, Yellow, Biting Bugs

a thrips next to a leaf vein Have you every felt a sharp pinch while outside during summer only to find a tiny, yellow, sliver-like bug when you investigate the bite? These bites are from a tiny insect called a thrips (the name is always plural; one thrips, many thrips). Thrips normally feed on plants with very sharp, knife-like mouthparts. If they happen to land on us they can bite causing a sharp, stabbing pain. The bites are annoying but completely harmless and are more common in mid- to late summer. Unfortunately, insect repellents don't work against thrips. Continue reading to discover ways to avoid thrips bites at our 'Bugs website . Thrips can be important plant pests where they damage leaves and in some cases even infect plants with a virus. Greenhouse growers in particular often treat their crops with insecticide to prevent thrips damage. drawing showing feathery wings

What are these BIG black ants in my house?

carpenter ant In early spring or late winter people often encounter these large black ants in homes. These big ants are different than the more common small, brown "nuisance ants" that plague kitchens. The big ants are called carpenter ants ( Camponotus spp .) and unlike their smaller cousins, nest above ground in cavities. Nest building and cavity expansion by these large, powerful ants can cause damage if nests occur in our homes. Most of the ants you find in homes are small, less than 1/4", and brown. There are several species of small brown ants that can nest in our home's walls or nearby soil and enter homes in search of food and water (see House Ants for identification and control). Nuisance ants are just that, a nuisance. They won't damage your home and pose no health threat of any kind.  There's another ant, however, that occasionally is found in homes that is much bigger (1/4"-5/8"), darker in color, nests in the walls, floors and c

Kudzu Bug - A Small, Brown, "Lady Bug" That Invades Homes and Gardens

Kudzu bugs clustered on wisteria. If you live in the south-eastern US you may have noticed a new insect this summer and fall (see photo): the insect is called the kudzu bug ( Megacopta cribraria ) and is characterized by - small, brownish/green in color shaped sort-of like a ladybug not seen prior to about 2 years ago invades homes in the fall congregates on garden plants, and especially, kudzu vine (For those that don't live in the southern US, kudzu is a highly invasive weedy vine, " the vine that ate the south !", that grows everywhere, on everything.) a new and important pest of soybean This true bug (Hemiptera)  resembles a ladybug (a cocinellid beetle ) in size and shape, but not color (see this page for a picture of a real ladybug/lady beetle). Also, you don't generally find ladybugs clustered together like you see in the photo. This a new "lady bug" has some unpleasant characteristics. (1) Feeds on and weakens garden plants as well a