Host plants:
The larvae feed on shrubby Rosaceae such as Prunus, Crataegus or Pyrus.
Habitat:
Nychiodes obscuraria inhabits dry and warm shrub-rich habitats, e.g. in grassland or steppe-like slopes.
Life cycle:
The larva hibernates. I observed it in the southern French Alps near Sisteron at the foot of thin stems of Prunus domestica in April 2013. The moths occur in June and July and again in a partial second generation in late summer and early autumn.
Remarks:
Nychiodes obscuraria occurs locally from NW-Africa across parts of the more Southern Europe to the Caucasus.