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Pediculosis pubis (also known as "crabs" and "pubic lice") is an infestation by the pubic louse, Pthirus pubis, a wingless insect which feeds on blood and lays its eggs (nits) on mainly pubic hair. Less commonly, hair near the anus, armpit, beard, eyebrows, moustache, and eyelashes may be involved.
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 . Although the louse cannot jump, it can also live in other areas of the body that are covered with coarse hair, such as the perianal area , the ...
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] Since 1958 the generic name Pthirus has been spelled with pth rather than phth, despite this being based on a misspelling of the Greek-derived phthirus. [3 ...
The body louse (Pediculus humanus humanus, also known as Pediculus humanus corporis) or the cootie is a hematophagic ectoparasite louse that infests humans. [1] It is one of three lice which infest humans, the other two being the head louse, and the crab louse or pubic louse.
Sucking lice (Anoplura, formerly known as Siphunculata) have around 500 species and represent the smaller of the two traditional superfamilies of lice.As opposed to the paraphyletic chewing lice, which are now divided among three suborders, the sucking lice are monophyletic.
Pediculus humanus capitis by Des Helmore. The head louse (Pediculus humanus capitis) is an obligate ectoparasite of humans. [1] Head lice are wingless insects that spend their entire lives on the human scalp and feed exclusively on human blood. [1]
Pthirus gorillae infests the same parts of the bodies of gorillas as Pthirus pubis does in humans, [6] but since the gorilla is hairier, the lice tend to range over the whole body. [7] The two also resemble each other with the exception that Pthirus gorillae has large eyes that are placed on large lateral protuberances.
The word originates from the Latin pubes, "adult, full-grown"; [1] "genital area, groin" [2] (e.g., Pubis); "the down or soft hair which begins to grow on young persons when they come to the age of puberty". [3] The use of the term in biology to refer to hairiness or soft down is recorded since 1760 for plants and since 1826 for insects. [1 ...