Gastropacha populifolia, the poplar lappet, is a moth of the family Lasiocampidae. It is found in Southern and Central Europe, through Russia, India and China up to Japan.
The wingspan is 45âÂÂ65 mm for males and 65âÂÂ80 mm for females. The moth flies from June to August depending on the location.
The larvae feed on Populus and willow species.