Host plants:
The caterpillar lives on Prunus species (especially Prunus spinosa). Less frequently it is also observed on Crataegus (hawthorn) and other woody Rosaceae.
Habitat:
Cilix glaucata inhabits warm, shrubbery rich grasslands, forest edges and sunny shrub associations and hedge areas.
Life cycle:
The moths fly in two to three generations from April to September. The caterpillars are observed from May to October. They live freely on the upper leaf surface or on a shoot. The pupa overwinters. Own observations of young caterpillars succeeded still in early October 2012 on the eastern Swabian Alb near Dischingen. These show that even in the low mountains at least a partial third generation is possible.
Endangerment: endangered
Endangerment factors:
Cilix glaucata is locally endangered since dry-warm woody components are in decline due to excessive removal on grasslands, destruction of species-rich forest edges and general trivialization of the landscape.
Remarks:
Cilix glaucata occurs from Northwest Africa across Europe to China. In North America fly related forms (whether conspecific?).