Flesh Fly vs Forest Caterpillar Hunter

Side-by-side species comparison

Attribute Flesh Fly Forest Caterpillar Hunter
Scientific Name Sarcophaga carnaria Calosoma sycophanta
Order Diptera Coleoptera
Family Sarcophagidae Carabidae
Size 10-18 mm 25-35 mm
Habitat Woodlands Woodlands
Diet Carrion Feeders Predators
Regions Europe, Asia, North America Europe, North Africa; introduced to North America
Conservation Least Concern Least Concern

Flesh Fly

A large gray fly with three black longitudinal stripes on the thorax and a checkered abdomen. Unlike most flies, females give birth to live larvae rather than laying eggs.

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Did You Know?

Flesh flies are larviparous, depositing live first-instar maggots directly onto food sources, giving their offspring a developmental head start over egg-laying competitors.

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.