Dock Bug - Coreus marginatus

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Description

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
Habitat

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.

  • David Gould
    Osiers Nature Area, Braunstone
    13 September 2014
  • AJ Cann
    Holwell, Brown's Hill Quarry
    26 August 2022
    nymph
  • Lostash
    WHETSTONE GARDEN 154
    30 March 2014
  • Mike Higgott
    County Hall
    18 August 2017
    teneral adult
  • David Nicholls
    County Hall, Glenfield
    01 September 2010
    family group
  • David Gould
    The Spearwort Fields
    25 August 2018

Leicestershire & Rutland Map

MAP KEY:

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

UK Map

Species data profile ?

Species profile

Common names
Dock Bug
Species group:
Bugs
Kingdom:
Animalia
Order:
Hemiptera
Family:
Coreidae
Records on NatureSpot:
1079
First record:
23/08/2008 (Gould, David)
Last record:
13/11/2024 (Hunt, Graham)

Total records by month

% of records within its species group

10km squares with records

The latest images and records displayed below include those awaiting verification checks so we cannot guarantee that every identification is correct. Once accepted, the record displays a green tick.

In the Latest Records section, click on the header to sort A-Z, and again to sort Z-A. Use the header boxes to filter the list.

Latest images

Latest records

  • David Gould
    The Spearwort Fields
    14 August 2013
    nymph
  • egaten
    Thurlaston garden
    07 July 2022
  • Mike Higgott
    County Hall
    03 September 2014
    nymph
  • Chris Tivey
    Syston Garden
    13 April 2021
    Dock Bug - (Coreus marginatus)
  • Lostash
    Blaby Industrial Estate
    08 September 2013
  • Graham Calow
    Sapcote, Field near Granitethorpe Quarry
    24 April 2020
    striking red body seen when in flight
  • Graham Calow
    Sapcote
    28 April 2014
    mating pair
  • Hazel Graves
    Charnwood Lodge
    18 August 2022
  • David Nicholls
    Burroughs Road, Ratby
    31 May 2013
  • CAPochin
    Kimberley Road Allotments
    16 September 2022
    Dock Bug
  • Mark Skevington
    Whetstone
    13 August 2011
    nymph
  • Craig Mabbett
    Broughton astley brook
    13 July 2014
  • egaten
    Thurlaston garden
    28 September 2014
  • HAPeacock
    Gilroes Cemetery
    13 May 2012
  • HAPeacock
    Gilroes Cemetery
    13 May 2012
  • Adrian Russell
    St Mary's Allotments, Leicester
    13 June 2014