Cottonwood Stag Beetle vs Predaceous Diving Beetle

Side-by-side species comparison

Attribute Cottonwood Stag Beetle Predaceous Diving Beetle
Scientific Name Lucanus mazama Cybister lateralimarginalis
Order Coleoptera Coleoptera
Family Lucanidae Dytiscidae
Size 22-35 mm 30-37 mm
Habitat Rivers & Streams Ponds & Lakes
Diet Wood Feeders Predators
Regions Central and Southern United States Southern Europe, Africa, Middle East
Conservation Least Concern Least Concern

Cottonwood Stag Beetle

A medium-sized North American stag beetle found near river bottoms. Males have moderately large mandibles.

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Did You Know?

They are most commonly found near cottonwood and willow trees along river corridors.

Predaceous Diving Beetle

A large olive-green diving beetle found across southern Europe and Africa. It is a powerful swimmer that hunts a range of aquatic animals.

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Did You Know?

In some parts of Asia and Africa, large Cybister species are collected and eaten as a traditional food source.