Hydrelia flammeolaria (Hufnagel, 1767)

Host plants:
The caterpillar lives mostly on alder species (Alnus) or at Acer (maple).

Habitat:
Hydrelia flammeolaria inhabits forests, wetlands, streams, alder galleries and similar locations with the host plants.

Life cycle:
The moths fly from mid-May to early August, mostly in just a single generation. The caterpillar lives from late June to late September and, according to literature, rests on the underside of leaves. The pupa overwinters.

Remarks:
The distribution extends across most of Europe and temperate Asia to Japan.