Host plants:
Grasses (Poaceae).
Habitat:
Leucania comma inhabits moist to moderately dry, extensively managed habitats such as pastures, meadows, Arrhenaterum meadows, river valleys, wetlands, forest edges and similar places.
Life cycle:
The moths fly, depending on altitude, usually in one or more rarely two generations from mid-May to August with peak in late June (rarely still in September). The caterpillar overwinters. The exact way of life of the caterpillar is still little known.
Remarks:
Leucania comma occurs in Europe (except in the southernmost area) and temperate Asia.