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Extension > Garden > Diagnose a problem > What insect is this? > Insects found indoors > Beetles, bugs, ants, and other insects without obvious wings - Under 1/4 inch long > Head louse

Head louse
Photo Credit: Jeff Hahn

Head louse
Size: 1/4 inch long.

Where/When: Found on human scalp, particularly on the heads of children.

Significance: Irritation, itching, secondary infection. Not known to transmit disease.
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