Eriogaster arbusculae is a moth in the family Lasiocampidae first described by Christian Friedrich Freyer in 1849.

It is found in parts of the Alps and mountainous areas of Fennoscandia.

There is one generation per year with adults on wing from April to July.

The larvae feed on the leaves of Vaccinium myrtillus, Vaccinium uliginosum, Betula, Salix and Alnus species.

This article on a moth of the family Lasiocampidae is a stub.