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According to Langton and Pinder 2007, the only species of Procladius in the British Isles with bare wing and light ground color of thorax is P. rufovittatus. The other two Psilotanypus have a black thorax, and Procladius s. str. has hairy wings and based on American examples never has so much contrast on the thorax. I am assuming that thorax color and wing hair are valid for females as well as males; in America the characters would work.equally well for both sexes.