Beneath, the forewing is glossy sooty grey with the exception of a rather irregular yellow outer margin.

— True freyeri Nick., is, however, according to Rebel, the much smaller insect from the highest Alps, in which the dots of the central rows sometimes merge.

The black basal spot of the forewing mentioned by Rebel is unessential, and the pale yellow colour is found in nickerli as well as freyeri.

— insignata Stgr., quite similar to the preceding, but with narrower wings; forewing also with very few dots, and hindwing without any; East Siberia.

Moth in grassy spots, resting closely pressed to a stalk or branch, with the wings strongly slanting in roof shape.

Common in suitable localities wherever they occur; the females must be searched for more diligently, as they fly less, but they are not rare.