Negro Bug vs Barn Swallow Bug

Side-by-side species comparison

Attribute Negro Bug Barn Swallow Bug
Scientific Name Thyreocoris scarabaeoides Oeciacus vicarius
Order Hemiptera Hemiptera
Family Thyreocoridae Cimicidae
Size 3-4mm 3-4 mm
Habitat Underground Woodlands
Diet Fruit Feeders Blood Feeders
Regions Europe North America
Conservation Least Concern Least Concern

Negro Bug

A tiny shiny black hemispherical bug that looks like a miniature beetle. It feeds on violets and strawberries.

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Did You Know?

So strongly resembles a tiny beetle that it is frequently misidentified and overlooked by bug enthusiasts.

Barn Swallow Bug

A cimicid ectoparasite of cliff swallows and barn swallows in North America. It can bite humans in buildings after swallow nests are abandoned.

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Did You Know?

Swallow colonies may abandon heavily infested nesting sites and relocate to parasite-free locations.