Chersotis andereggii is a moth of the family Noctuidae.
Chersotis andereggii has a wingspan of 29âÂÂ32 mm. These relatively small moths are generally greyish-brown, with large dark orbicular and claviform markings. Warren states ab. andereggii Boisd. of R. rectangula is darker, without the grey irroration, the lines not showing paler.
Adults are on wing from the end of July to the first half of August. The larvae feed on Lychnis, Melilotus and Trifolium species.
This species can be found in Europe (Bulgaria, East European Russia, Estonia, Finland, France, Greece, Italy, Switzerland), in the southern Urals, Turkey, north-western Iran, Transcaucasia, Turkmenistan, Azerbaijan, Kirghizia, the Altai Mountains, the Sayan Mountains, Baikal, Kamchatka, Mongolia, the Himalaya, the Alps.
These moths live in alpine meadows and steppe slopes.