Polydrusus formosus
A bright metallic green weevil with round scales, a dark club to the pale antennae and a short groove between the eyes. It does not have any setae (bristles). It has conspicuous striae on the elytra. The scales can wear off to reveal the dark body beneath.
Length 5 to 6 mm.
Adults of this beetle lay their eggs in the bark or leaves of the host-plants. The soil-inhabiting larvae grow up to 7 millimetres long feeding on juicy plant roots. In Autumn, their development is complete. They overwinter and pupate in Spring.
Widespread in England but previously very scarce, it is now undergoing an increase in numbers.
Seen on my ring binder as I was sitting outside the cafe in Chiswick House Gardens in June 2023.
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