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|Tritomegas bicolor Pied Shieldbug
Although a distinctive black and white shieldbug, this species now requires careful separation from the very similar T. sexmaculatus, a recent arrival in south-east England (see this species for further details).
Like other members of this family, this is a ground-dwelling species, but may be found feeding on the aerial parts of white dead-nettle and black horehound, the main hostplants.
Widespread in southern Britain in hedgerow and woodland edge habitats, becoming rarer northwards and absent from Scotland and Ireland. There may be two overlapping generations each summer. Females exhibit brood care of the eggs.
Adult: All year
Length 5.5-7.5 mm
|Adult: Berks (April 2009) ©Jonathan Michaelson
|Adult: north London (April 2010) ©Tristan Bantock
||Adults: north London (April 2009) ©Tristan Bantock
|Early instar nymphs: May (June 2010) ©Jonathan Michaelson
||Early instar nymphs: May (June 2010) ©Jonathan Michaelson
|Mid and late instar nymphs: Berks (June 2009) ©Jonathan Michaelson
||Late instar nymph: Berks (June 2009) ©Jonathan Michaelson