Boudinotiana puella, the pale orange underwing, is a moth of the Geometridae family. It is found in isolated populations in central Europe, ranging to southern Russia in the east. The wingspan is 29–34 mm for males and 27–30 mm for females. Adults are on wing from February to April in one generation per year. The larvae feed on the leaves of Populus species, especially Populus tremula. The larvae can be found from May to June. The species overwinters in the pupal stage.