Forest Caterpillar Hunter vs Metallic Hister Beetle

Side-by-side species comparison

Attribute Forest Caterpillar Hunter Metallic Hister Beetle
Scientific Name Calosoma sycophanta Saprinus semistriatus
Order Coleoptera Coleoptera
Family Carabidae Histeridae
Size 25-35 mm 3-5 mm
Habitat Woodlands Farmland
Diet Predators Carrion Feeders
Regions Europe, North Africa; introduced to North America Europe, North Africa, Western Asia
Conservation Least Concern Least Concern

Forest Caterpillar Hunter

A large, brilliant metallic green and gold ground beetle that climbs trees to hunt caterpillars. It was introduced to North America for gypsy moth biocontrol.

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Did You Know?

A single beetle can consume over 300 caterpillars during its larval and adult life.

Metallic Hister Beetle

A small beetle with a metallic blue-green sheen found on carrion and sun-dried carcasses. It is frequently used in forensic entomology studies.

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Did You Know?

Its predictable arrival timeline on corpses makes it a valuable indicator for forensic investigators estimating time since death.