Big-legged Bug vs Alpine Ground Bug

Side-by-side species comparison

Attribute Big-legged Bug Alpine Ground Bug
Scientific Name Acanthocephala terminalis Geocoris grylloides
Order Hemiptera Hemiptera
Family Coreidae Geocoridae
Size 17-23 mm 3-4 mm body length
Habitat Underground Mountains
Diet Sap Feeders Predators
Regions Eastern North America Southern Europe, Mediterranean mountains
Conservation Least Concern Least Concern

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.

Alpine Ground Bug

A small, big-eyed predatory bug of dry mountain slopes. It uses its large eyes to spot and stalk small arthropod prey.

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Did You Know?

Its disproportionately large eyes give it almost 360-degree vision for spotting prey.