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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 - Larger than 1/4 up to 1/2 inch long > Bat bug

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Bat bug

Bat bug

Jeff Hahn

Bat bug close up

Jeff Hahn


Size: 1/5 inch long as adults

Where/When: In homes and other buildings where bats roost. Feed at night, hide in crevices during the day. Found anytime of the year.

Significance: Nuisance and irritation from bites. Not known to transmit disease to people.

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