Cereal Leaf Beetle Oulema rufocyanea/melanopus

The Cereal Leaf Beetle is a metallic blue-green Leaf Beetle with pitted wing cases and a red-brown thorax. It is 6mm long. Two species, O. rufocyanea and O. melanopus are alike and difficult to determine which visually in the field. Both are common in the UK and can be a pest to cereal crops.