The triangle (Heterogenea asella) is a species of moth of the family Limacodidae. It is found in most of the Palearctic realm. The wingspan is 15–20 mm.UKmoths Adults are on wing from the end of May to mid July in one generation per year.
The larvae feed on Acer, Corylus, Fagus and Quercus species. References
External links
Fauna Europaea Lepiforum.de