Phyllodesma americana, the American lappet moth, is a moth of the family Lasiocampidae. It is found from Nova Scotia to [northern Florida], west through Texas to California, north to British Columbia and Yukon. The wingspan is 29–49 mm. Adults are on wing from March to September in two generations in the south. In eastern Ontario, adults are on wing from May to July. The flight season in Ohio is from April to August. There is one generation per year in the northern part of the range. The larvae feed on the leaves of Alnus, Betula, Quercus, Populus, Salix, Ceanothus velutinus, Chrysolepis chrysophylla and Rosoideae species.