Host plants:
The caterpillar lives on deciduous woods. In particular, Betula and Alnus are used. In literature, there are also evidence of willow (Salix). I myself have found numerous caterpillars on Alnus glutinosa, Alnus incana and Betula.
Habitat:
Cabera pusaria inhabits forests and other woody plants rich habitats to gardens.
Life cycle:
The moths fly in a single or two generations from late April or early May to August. The caterpillars are observed from June to September often on alders, as on wet, older forest clearcuttings.
Remarks:
The distribution spans the Euro-Siberian forest zone from Northern Spain to the Amur.