Entoma
Leather beetle, Carabus coriaceus, plate

Ground beetles

Carabus coriaceus

Leather beetle

It is the largest ground beetle in Europe, reaching 40 mm long, and it can spray a foul smelling defensive fluid when disturbed.

WhereDeciduous forest floor and woodland edges
Size30 to 40 mm body length
WhenApril to October

The Leather beetle is entirely black with a broad thorax, and its elytra are pitted with small dents that sometimes merge into a wrinkled, leathery texture.

It hunts slugs, worms and other invertebrates at night among forest leaf litter, and it rests in a dormant state through the hottest, driest weeks of summer.

Traits

Habitat

Woodland

Colour

Black

Active

Night

To people

Does not sting people, though it may release a strong smelling defensive fluid if picked up.

Activity through the year

Often confused with

Violet ground beetlenot in guide
Carabus violaceus

Somewhat smaller at 20 to 30 mm, with smooth black elytra bordered by a violet or indigo sheen absent from the plain black Leather beetle.

Questions

Is the Leather beetle dangerous to people?

Does not sting people, though it may release a strong smelling defensive fluid if picked up.

When can you see the Leather beetle?

The Leather beetle can be seen from April to October, at night.

Plate retouched from a photo by Udo Schmidt from Deutschland, CC BY‑SA 2.0, Wikimedia Commons Licence

The plate on this page is shared under the same licence as its source, CC BY-SA.

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Beetles›Ground beetles›Carabus

Last updated 2026-09-26. Every entry is checked against published sources.