Order Butterflies and moths | Genus Heterogenea Rank Species | |
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Similar Butterflies and moths, Apoda limacodes, Gazoryctra fuscoargenteus, Acossus terebra, Map‑winged swift |
The Triangle (Heterogenea asella) is a species of moth of the Limacodidae family. It is found in most of the Palearctic ecozone.

The wingspan is 15–20 mm. 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. They are grub-like and have very short legs and a retracted head. Larvae can be found from August to May. The last instar larva overwinters in a cocoon resembling a gall.





References
Heterogenea asella Wikipedia(Text) CC BY-SA