Taxonomy: Order Phthiraptera (lice)
Animal: Pediculus humanus var. capitis 3 07.jpg
Pediculus humanus var. capitis (head louse)- male 2 mm. Ped. humanus var. capitis is not confined to the head but also occurs on the body cf. Ped. humanus var. corporis which only occurs on the body. The eggs of both are similar; var. capitis adults tend to be smaller (male 2mm, female 2.8-3mm), browner in colour and the antennae segments not so elongate. The body louse (male up to 3mm, female up to 4.5 mm) is an important vector of typhus fever, trench fever and louse -borne relapsing fever.
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