Pennsylvania Ambush Bug vs Big-legged Bug

Side-by-side species comparison

Attribute Pennsylvania Ambush Bug Big-legged Bug
Scientific Name Phymata pennsylvanica Acanthocephala terminalis
Order Hemiptera Hemiptera
Family Reduviidae Coreidae
Size 8-12 mm 17-23 mm
Habitat Farmland Underground
Diet Predators Sap Feeders
Regions Eastern North America from Canada to the Gulf states Eastern North America
Conservation Least Concern Least Concern

Pennsylvania Ambush Bug

A small chunky yellow and brown bug with thickened raptorial forelegs that hides in flower heads to ambush pollinators. It can capture prey many times its own size.

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Did You Know?

It can capture and kill bumble bees and butterflies that are more than ten times its own weight.

Big-legged Bug

A large, dark coreid bug found in eastern North America with prominently expanded hind tibiae. The hind femora of males are greatly swollen with large spines. It feeds on a wide variety of trees and shrubs.

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Did You Know?

The exaggerated hind legs of males serve as weapons and signals of fitness, with larger-legged males winning more fights and mates.