Pubic louse. Coloured scanning electron micrograph (SEM) of a pubic louse (Phthirus pubis), also known as the crab louse, clinging to human hair. An infestation of P. pubis causes pediculosis, the symptoms of which are severe itching and a rash. The lice feed by sucking blood and are spread through sharing bedding and clothing, or by sexual contact. Each of the louse's six legs ends in a massive claw, which folds inward to meet a thumb- like projection on the opposite side. These claws allow the louse to climb and swing through its hairy habitat, locking into position when disturbed. Magnification: x60 when printed 10cm wide.
September 27th, 2018
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