Last modified: June 18, 2021, 3:25 p.m.
A very rare and local species in Belgium. Nowadays most observations come from the southern part of the country.
The adults fly in one generation a year; onwards from beginning of May till end of June. The males come to light, females occasionally.
The larva lives on deciduous trees with a strong preference for Quercus. Hibernates as a pupa in a cocoon under the ground near the food plant.