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Bugs are surprisingly good at biting before you ... Bites vary by species and person, but they’re often raised, red bumps or welts. Some might even bleed. Blackfly bites also might swell.

"Like bed bugs, bat bugs are not social and do not live in colonies, nests or hives." Bat bugs are wingless, flat, oval-shaped insects. Adults grow up to 1/4 inch long, about the size of an apple ...