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Crab louse
Crab lice (singular, louse), scientific name Phthirus pubis and commonly called "crabs" due to their resemblance to the crab, are one of three kinds of human lice in the large group of lice families, the others being head lice and body lice, which live in clothing.
Note: The above text is excerpted from the Wikipedia article "Crab louse", which has been released under the GNU Free Documentation License.
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