Rheumaptera subhastata
Rheumaptera subhastata, the white-banded black moth,  is a moth of the family Geometridae. It is found in the Palearctic and Nearctic realms, where it is widely distributed in western North America. The wingspan is 26–31 mm. Adults are on wing from mid May to mid July. There is one generation per year. The larvae feed on the foliage of Alnus species. They fold a leaf into a tent. External links

Bug Guide
Lepiforum.de
Moths and Butterflies of Europe and North Africa
North American Moth Photographers Group

Rheumaptera
Moths of Europe