Common Green Shield Bug

©Rachel Scopes

Common Green Shield Bug

Scientific name: Palomena prasina
The Common Shield Bug was once restricted to Southern England, but has since been moving northwards and is now quite widespread. It can be found in all kinds of habitats from gardens to farms.

Species information

Statistics

Length: 1.3cm

Conservation status

Common.

When to see

May to November

About

A recent beneficiary of climate change, the Common Green Shield Bug was once restricted to Southern England. In recent years, however, it has been on the march, and is now common and widespread across much of England and Wales, and spreading further northwards. The Common Green Shield Bug feeds on a wide variety of plants, helping to make this one species which could turn up anywhere from garden to farm. Adults overwinter and emerge in spring, laying their eggs on the undersides of leaves. The rounded nymphs appear in June and new adults are present in early autumn.

How to identify

There are two species of Green Shield Bug in the UK - one native (the Common Green Shield Bug) and one that arrived very recently from Europe (the Southern Green Shield Bug,
Nezara viridula). The Common Green Shield Bug is bright green with tiny black dots and dark wings, while the Southern Green Shield Bug is uniformly green in colour and has pale wing membranes.

Distribution

Mainly found in England and Wales, but spreading north.

Did you know?

Common Green Shield Bugs do not damage plants by drawing their sap, but the recently arrived Southern Green Shield Bug may damage some vegetables, especially runner and French bean pods. However, this species is most numerous in late summer, after the cropping period, so gardeners don't need to worry about its presence in the country just yet.

How people can help

The Wildlife Trusts record and monitor our local wildlife to understand the effects of various factors on their populations, such as the introduction of new species. You can help with this vital monitoring work by becoming a volunteer - you'll not only help local wildlife, but learn new skills and make new friends along the way.