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|Coreus marginatus Dock Bug
A large and mottled reddish-brown squashbug with a broad, oval abdomen. The two small projections between the antennae are diagnostic.
There is one generation per year, adults mating and laying eggs in spring. The nymphs feed on dock and other related plants in the Polygonaceae; new adults may be found from August onwards. Common and widepread in southern Britain, including Ireland, where it may be found in a variety of dry and damp habitats.
Adult: All year
Length 13-15 mm
|Adult: south London (October 2007) ©Joe Botting
|Adult: north London (April 2011) ©Tristan Bantock
||Adult: south London (April 2007) ©Joe Botting
|Early instar nymph: Berks (August 2007) ©Jonathan Michaelson
||Early instar nymph: (September 2006) ©Jon Law (Improved Image)
|Late instar nymph: (July 2006) ©Jon Law (Improved Image)
||Late instar nymph: (September 2007) ©David Dupplaw|
|Adult & late instar nymph: (September 2007) ©Brian Kilford
||Teneral adult: (September 2006) ©Jon Law (Improved Image)|