Host plants:
The caterpillar lives on nettle (Urtica dioica).
Habitat:
Abrostola tripartita inhabits forest edges with the larval host plant, woodlands, riparian areas and marsh edges. More rarely, the moth is also found in gardens and parks. It prefers rather damp, shady and cool habitats.
Life cycle:
Abrostola tripartita flies in a single or two generations (2nd often only partial) from May to August, rarely later. The caterpillars are found mainly between midsummer and autumn. The pupa overwinters.
Remarks:
Abrostola tripartita is widespread and often common in Central Europe. The total distribution extends across Europe and temperate Asia to Japan.