Downy Birch Aphid

Euceraphis punctipennis, the downy birch aphid or European birch aphid, is a species of aphid in the order Hemiptera. These aphids are tiny green insects with soft bodies and membranous wings. They are found living on downy birch trees (Betula pubescens) where they feed and multiply on the buds and leaves by sucking sap.