It is found from western and central Europe to the Russian Far East, northern China, Japan and Korea.

Its forewings are purplish fuscous, more or less greenish tinged, with a paler patch beyond the cell; prothorax conspicuously whitish.

nigra Tutt has the forewing black throughout, without any green tinge, and has only been taken in the North of England; lastly, in ab.

[1] The white patch distal to the reniform appears to resemble a crown, hence the name coronet.

Wing coloration and size is dependent on the environmental factor in which they grow as well as it is expected to be shown through physical differences and morphology.