Last modified: Aug. 26, 2021, 2:59 p.m.
A common species throughout Belgium, especially in the northern part.
The adults fly in June and July. They are active in sunshine and later occasionally come to light.
The larva spins two or more seeds of Heracleum sphondylium together and lives within. It hibernates full-fed from October in a cocoon spin in the soil and pupates in spring in that cocoon.