Entoma
Black snail beetle, Phosphuga atrata, plate

Rove beetles

Phosphuga atrata

Black snail beetle

It hunts snails by pushing its narrow, elongated head into the shell and injecting saliva that dissolves the prey's tissue over many hours.

WhereWoodland, grassland, and gardens
Size10 to 15 mm long
WhenJanuary to December

This shiny black beetle has a narrow head and long neck adapted for reaching deep into snail shells, with broadly spaced ridges running the length of its wing cases. It measures 10 to 15 mm long and cannot fly.

Mostly nocturnal, it hides under logs and leaf litter by day and can spend more than twelve hours feeding on a single snail, staying active in most months of the year.

Traits

Habitat

Woodland

Colour

Black

Active

Night

To people

Harmless to people; it feeds only on snails.

Activity through the year

Often confused with

Obscure carrion beetlenot in guide
Silpha obscura

The obscure carrion beetle is larger and noticeably rounder and more massive bodied at 14 to 18 mm, unlike the black snail beetle's slimmer form and narrow, elongated head.

Questions

Is the Black snail beetle dangerous to people?

Harmless to people; it feeds only on snails.

When can you see the Black snail beetle?

The Black snail beetle can be seen from January to December, at night.

Plate retouched from a photo by Francisco Welter-Schultes, CC0, Wikimedia Commons Licence

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