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Heterotoma planicornis
Family: Miridae

The broad and flattened 2nd antennal segment, dark ground colour and contrasting greenish legs make this species unmistakeable.

Abundant throughout most of Britain on various plants and trees, in particular nettles. Both adults and the reddish nymphs feed on small insects as well as plant buds and unripe fruits.


Eggs hatch in May, the nymphs becoming adult from June onwards.

Adult: July-October
Length 4.5-5.5 mm
Heterotoma planicornis
Adult: south London (June 2007) ©Toby Barton

Heterotoma planicornis Heterotoma planicornis
Adult: Berks (July 2008) ©Jonathan Michaelson

Adult: Shrops (July 2005) ©Nigel Jones

Heterotoma planicornis Heterotoma planicornis
Nymph: Berks (July 2008) ©Jonathan Michaelson

Nymph: Sussex (July 2006) ©Brian Valentine