Pthirus is a genus of lice. There are only two extant species, and they are the sole known members of the family Pthiridae. [4] Pthirus gorillae infests gorillas, [5] and Pthirus pubis afflicts humans, and is commonly known as the crab louse or pubic louse. [6] The two species diverged some 3.3 million years ago. [7]

Pthirus pubis, the pubic or crab louse, is an insect of the order Psocodea and is an ectoparasite whose only host are humans. Life Cycle. Pubic lice (Pthirus pubis) have three stages: egg, nymph and adult. Eggs (nits) are laid on a hair shaft . Females will lay approximately 30 eggs during their 3-4 week life span.

The crab louse or pubic louse (Pthirus pubis) is an insect that is an obligate ectoparasite of humans, feeding exclusively on blood. [2] The crab louse usually is found in the person's pubic hair.

Pubic lice (Pthirus pubis) maintain a worldwide parasitic population infesting two to over 10 percent of human populations, continuing a presence that has been constant since early evidence 10,000 years ago.

Oct 6, 2024 · Phthiriasis palpebrarum, also called "phthiriasis ciliaris" or "ciliary phthiriasis," is an ectoparasitosis of the eyelashes due to an infestation with Pthirus pubis (sometimes written as " Phthirus pubis "), also known as the pubic or crab louse.

Phthiriasis, also known as pediculosis pubis, is an infestation caused by the crab louse, Pthirus pubis. This condition primarily affects the pubic hair but can also infest other coarse body hair, including eyelashes, eyebrows, and armpit hair.

Pthirus gorillae or gorilla louse is a species of parasitic sucking louse that afflicts gorillas. [1] It is found in the African continent, specifically in Rwanda and Democratic Republic of the Congo. [2]

Dec 16, 2019 · Pthirus pubis (formerly known as Pediculus pubis) is an infestation of the pubic hair with the crab louse, a small parasitic insect that feeds on human blood. People usually get pubic lice, or "crabs", during close person-to-person contact associated with sex, but they can also get them through physical contact with contaminated objects such as ...

Sucking lice are small wingless external parasites that feed on blood. Three types of sucking lice infest humans: the body louse, Pediculus humanus humanus Linnaeus, also known as Pediculus humanus corporis; the head louse, Pediculus humanus capitis De Geer; and the crab louse or pubic louse, Pthirus pubis (Linnaeus).

Apr 8, 2025 · The 3 types of human lice include the head louse (Pediculus humanus capitis), the body louse (Pediculus humanus corporis), and the crab louse (Pthirus pubis). Body lice infest clothing,...