Satin Moth (Leucoma salicis) — A beautiful, but non-native species, Satin Moths were introduced from Europe in 1920 and can now be found across Canada and in the northwestern and northeastern states. Caterpillars eat aspen, poplar (both Populus spp.) and willow (Salix) and can be a forest pest species. Photo by Heather McKee on 7/25/17 in Missoula, MT.