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Palomena prasina Common Green Shieldbug
Family: Pentatomidae

A large shieldbug with a dark wing membrane and reddish antennae (4th and 5th segments). Adults are bright green in the spring and summer, but finely punctured with dark marks. They become a darker bronze-brown prior to winter hibernation.

There is one generation per year; the nymphs feed on many deciduous trees and shrubs, and can be found from June to October. Later nymphs are often darker than those found earlier in the season. Newly-emerged adults may show a pale wing membrane, leading to possible confusion with Nezara viridula, a recent arrival in southern England.

Common and widespread throughout Britain and Ireland, becoming scarcer further north and as yet unrecorded from Scotland. May be found in many habitats, including parks and gardens.

Adult: All year
Length 12-13.5 mm

see illustrated life stages chart
Palomena prasina Green Shieldbug
Spring adult: north London (April 2007) ©Tristan Bantock

Palomena prasina Green Shieldbug Palomena prasina Green Shieldbug
Spring adult: west London (May 2008) ©Tristan Bantock
Winter adult: Oxon (November 2008) ©Bob Knight

Palomena prasina Green Shieldbug Palomena prasina Green Shieldbug
Winter adult: south London (March 2007) ©Joe Botting

Female egg-laying: ©Trevor & Dilys Pendelton (Eakring Wildlife)
Palomena prasina Green Shieldbug Palomena prasina Green Shieldbug
Eggs: Surrey (June 2007) ©Ashley Wood

1st instar nymphs: Shropshire (June 2003) ©Nigel Jones
Palomena prasina Green Shieldbug Palomena prasina Green Shieldbug
2nd instar nymph: south Wales (June 2006) ©Ian Tew

3rd instar nymph: Lincs (July 2006) ©Jon Law (Improved Image)
Palomena prasina Green Shieldbug Palomena prasina Green Shieldbug
3rd instar nymph: Surrey (June 2007) ©Ashley Wood

4th instar nymph: Surrey (August 2007) ©Ashley Wood
Palomena prasina Green Shieldbug Palomena prasina Green Shieldbug
4th instar nymph: Surrey (September 2007) ©Ashley Wood

Final instar nymph: south Wales (August 2006) ©Ian Tew

Palomena prasina Green Shieldbug Palomena prasina Green Shieldbug
Final instar nymph: Surrey (September 2007) ©Ashley Wood

Newly emerged adult:  south London (September 2007) ©Joe Botting