Black Clock Beetle vs Nebroides Ground Beetle

Side-by-side species comparison

Attribute	Black Clock Beetle	Nebroides Ground Beetle
Scientific Name	Pterostichus madidus	Carabus problematicus
Order	Coleoptera	Coleoptera
Family	Carabidae	Carabidae
Size	14-18 mm	20-28 mm
Habitat	Gardens	Heathland
Diet	Predators	Predators
Regions	Europe	Northern Europe, British Isles
Conservation	Least Concern	Least Concern

Black Clock Beetle

A common nocturnal ground beetle found throughout European gardens and farmland. It is jet black and a voracious predator of slugs and pest insects.

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Gardeners consider it one of the most beneficial beetles because a single individual can eat its body weight in slug eggs every night.

A common black ground beetle of northern European heathlands and moorlands. It is an active nocturnal predator with ridged elytra.

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Despite its name it is one of the most easily identified Carabus species in the British Isles.