The historical and current distribution in Britain of the endangered Tansy Leaf Beetle Chrysolina Graminis (l.) (Coleoptera: Chrysomelidae)

We assess the past distribution of the endangered Tansy Leaf Beetle Chrysolina graminis (L.) with a view to informing future conservation efforts, for example, reintroductions. We apply a set of protocols to evaluate the reliability of historical and modern records using museum specimens, literature references and data collected by members of the public, to define more clearly its locations from the early 1800s onwards. We also consider likely factors contributing to its decline, particularly in the Cambridgeshire Fens.