Black Horse Fly vs Eastern Bat Bug

Side-by-side species comparison

Attribute Black Horse Fly Eastern Bat Bug
Scientific Name Tabanus atratus Cimex adjunctus
Order Diptera Hemiptera
Family Tabanidae Cimicidae
Size 20-28 mm 4-5 mm
Habitat Farmland Gardens
Diet Blood Feeders Blood Feeders
Regions Eastern United States from the Great Plains to the Atlantic coast Eastern North America
Conservation Least Concern Least Concern

Black Horse Fly

A very large entirely black horse fly and one of the biggest flies in North America. Females are persistent blood-feeders that can harass livestock and humans during summer months.

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Did You Know?

Its larvae are aquatic predators that live in muddy pond bottoms and can take up to two years to complete development.

Eastern Bat Bug

A blood-feeding ectoparasite primarily of bats in eastern North America. It can bite humans when bat colonies are removed from buildings.

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Did You Know?

It is nearly indistinguishable from the common bed bug and requires microscopic examination to tell apart.