Host plants:
The larvae feed very polyphagously on the often only scarce grasses and herbs of their habitats.
Habitat:
Agrotis obesa inhabits cliffs or rocky slopes up to high Alpine levels. I recorded larvae under stones together with those of Standfussiana lucernea in 2600m asl in S-Spanish Sierra Nevada in late March 2015.
Life cycle:
The young larva hibernates and is mature in April or May. It estivates prior to pupation so that moths will appear not until late summer and autumn.
Remarks:
Th species occurs in N-Africa, S-Europe and W-Asia.