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The horse chestnut scale insect was first found in the UK in the late 1960s, having come over from southern Europe. It is now widespread and common in the south of the UK and Ireland, and is spreading northwards. Mature, adult horse chestnut scale

of ornamental shrubsCankerEuonymus scaleLeaf miner flyHorse chestnut scale insect

chestnut scale insects, Pulvinaria regalis (pictured above). These strange insects can be quite unsightly on the bark of infested trees. In this case they've flaked away, leaving pale dusky echoes. They've probably been mopped up by the larvae of the badly