Green Shield Bug

Palomena prasina

  1. Wildlife
  2. Invertebrates
  3. Bugs
  4. Green Shield Bug


A recent beneficiary of climate change, the Green Shield Bug was once restricted to southern England. In recent years, however, Green Shield Bugs have been on the march, and are now common and widespread across much of England and Wales, and spreading ever northwards. The 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 which arrived very recently from Europe (the Southern Green Shield Bug). The latter can be distinguished from the former by its uniformly green colour and pale wing membranes. The Common Green Shield Bug is bright green with tiny black dots and dark wings. The similar Gorse Shield Bug has dark grey sides.

Where to find it

Widespread, becoming rarer in the north.


When to find it

  • May
  • June
  • July
  • August
  • September
  • October
  • November

How can people help

The Green Shield Bug has been spreading northwards as a result of climate change, while the Southern Green Shield Bug has recently appeared on our shores and is likely to become more widespread. The Wildlife Trusts work with researchers, scientists and other conservationists to monitor changes in our native wildlife to determine the effects of environmental change, such as the introduction of new species or climate change. You can help: volunteer for your local Trust and you'll be able to monitor populations and survey habitats, adding to a growing bank of data on the effects of climate change.

Species information

Common name
Green Shield Bug
Latin name
Palomena prasina
Length: 1.3cm
Conservation status