Guide to Shieldbugs of the British Isles

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Shieldbugs look somewhat like beetles but have sucking mouthparts instead of mandibles and their young (called nymphs) pass through several moults, becoming more like adults at each stage. This guide covers shieldbugs belong to the families Acanthosomatidae, Cydnidae, Scutelleridae, Thyreocoridae, and Pentatomidae, as well as the 'honorary shieldbugs' from the family Coreidae.
In this guide species have been grouped by appearance and where the nymph is distinctive it is shown as well as the adult. It includes colour illustrations of 45 shieldbugs and a table of identification characteristics.