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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 ...
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.
Pthirus pubis: pubic area, eyelashes visual identification under magnification common worldwide skin-to-skin contact such as sexual activity and via sharing clothing or bedding "Chiggers" (Trombiculidae) – Trombiculosis: Arachnida: Trombiculidae: skin visual identification under magnification, microscopy worldwide (mesic habitats) high grass ...
Pubic lice fall within the Pthirus pubis family of louse, different from head lice. Learn how you can get crabs and what to do once you see them. Pubic Lice (Crabs) Transmission and Medicated Removal
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 ...
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Unlike the genus Pediculus, the divergence in Pthirus does not match the age of host divergence that likely occurred 7 million years ago. Reed et al. propose a Pthirus species host-switch around 3-4 million years ago. While it is difficult to determine if a parasite–host switch occurred in evolutionary history, this explanation is the most ...
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