 Adults can be found from July to October.They are flower feeders, visiting in particular members of the Umbelliferae (especially "Heracleum sphondylium") and Asteraceae.The species is parasitic, the larvae developing inside the subterranean larvae of moths, especially of crambid moths ("Chrysoteuchia culmella", Crambidae), tiger moths ("Ammobiota festiva", Erebidae), lappet moths ("Dendrolimus pini", Lasiocampidae) and ermine moths (Yponomeutidae)).