Dock Bug - Coreus marginatus


Length 13-15 mm. A large and mottled reddish-brown squashbug with a broad, oval abdomen. The two small projections between the antennae are diagnostic.

Identification difficulty

Various habitats, both dry and damp.

When to see it

All year round. New adults from August onwards.

Life History

There is one generation per year, adults mating and laying eggs in spring. The larvae feed on Dock and other related plants in the Polygonaceae family.

UK Status

Common and widespread in southern Britain

VC55 Status

Common in Leicestershire and Rutland.

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Leicestershire & Rutland Map


Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015

UK Map