Tuesday 21 May
In the News: First crane egg in the western UK in four centuries

What’s the World’s Favourite Species?
Find out here.| Kingdom | Animalia |
| Phylum | Arthropoda |
| Class | Insecta |
| Order | Hemiptera |
| Family | Pentatomidae |
| Genus | Palomena (1) |
This common bug has a flattened, shield-shaped body, as the name suggests (3). It is bright green in colour with delicate flecks of black that look like small puncture marks (2). In November, the insects darken in colour and spend the winter hibernating with a dark-bronze colouration (2). Although the sexes are similar in appearance, females tend to be larger than males (2). Like all bugs (Hemiptera), the green shield bug has specialised sucking mouthparts, which in this species are used to feed on plant sap (4). This species belongs to a sub-order known as the ‘true bugs’ (Heteroptera) in which only the tips of the wings are membranous; the rest of the wing is hardened. When the bug is at rest, the wings are held flat over the body and the membranous parts of the wings overlap (2).
Adult green shield bugs emerge from hibernation in May and mate in June (2). As with most bugs, individuals mate ‘back to back’ (4). The eggs are laid in hexagonal batches of around 28, and a single female will lay a number of batches so that the total number she lays will be around 100 (2). All bugs have a type of insect development known as ‘hemimetabolous development’ in which there is no larval stage but a number of wingless nymphs instead which resemble the adult form(4). This species passes through five nymphal stages, moulting between each one. Each stage has a different colouration, and the final stage has short wings. The adult stage is reached in September, and they go into hibernation in November (2).
TopWidespread in England and Wales but becomes rare further north, especially in Scotland (1) (2). It is also found in mainland Europe where it is a minor pest (2).
TopFound in a wide range of habitats but becomes confined to woodlands in northern parts of its range (1). Its hosts include bushes and shrubs, but hazel is one of its preferred species (2).
TopNot threatened (2).
TopThis species is not threatened.
TopConservation action is not required for this common species.
TopFor more on invertebrates, their conservation and details of how to get involved see Buglife, the invertebrate conservation trust:
http://www.buglife.org.uk
This information is awaiting authentication by a species expert, and will be updated as soon as possible. If you are able to help please contact:
arkive@wildscreen.org.uk
More »Related species
Link to this photo
Embed this ARKive thumbnail link by copying and pasting the code below.
Terms of Use - The displayed thumbnail may be used as a link from your website to ARKive's online content for private, scientific, conservation or educational purposes only. It may NOT be used within Apps.
Read more about
MyARKive
MyARKive offers the scrapbook feature to signed-up members, allowing you to organize your favourite ARKive images and videos and share them with friends.
Terms and Conditions of Use of Materials
Copyright in this website and materials contained on this website (Material) belongs to Wildscreen or its licensors.
Visitors to this website (End Users) are entitled to:
End Users shall not copy or otherwise extract, alter or manipulate Material other than as permitted in these Terms and Conditions of Use of Materials.
Additional use of flagged material
Green flagged material 
Certain Material on this website (Licence 4 Material) displays a green flag next to the Material and is available for not-for-profit conservation or educational use. This material may be used by End Users, who are individuals or organisations that are in our opinion not-for-profit, for their not-for-profit conservation or not-for-profit educational purposes. Low resolution, watermarked images may be copied from this website by such End Users for such purposes. If you require high resolution or non-watermarked versions of the Material, please contact Wildscreen with details of your proposed use.
Creative commons material
Certain Material on this website has been licensed to Wildscreen under a Creative Commons Licence. These images are clearly marked with the Creative Commons buttons and may be used by End Users only in the way allowed by the specific Creative Commons Licence under which they have been submitted. Please see http://creativecommons.org for details.
Any other use
Please contact the copyright owners directly (copyright and contact details are shown for each media item) to negotiate terms and conditions for any use of Material other than those expressly permitted above. Please note that many of the contributors to ARKive are commercial operators and may request a fee for such use.
Save as permitted above, no person or organisation is permitted to incorporate any copyright material from this website into any other work or publication in any format (this includes but is not limited to: websites, Apps, CDs, DVDs, intranets, extranets, signage, digital communications or on printed materials for external or other distribution). Use of the Material for promotional, administrative or for-profit purposes is not permitted.