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SP120: Bloodsucking Insects

Figure 7. Head lice are wingless insects with sucking mouthparts that are 1 mm to 2 mm long. The legs are about the same length, and have claws to grasp hairs. This louse is found only on the hairs of the head. It glues its eggs to the hairs. Preferred sites are on hairs behind the ears and on the back of the head.