The Apple Ermine Moth (Yponomeuta malinellus) attacks apple and crabapple. Surveys are conducted because of the presence of potential host material in Wyoming, potential introduction pathways from ...

The Cherry Ermine Moth (Yponomeuta padellus) feeds on cherry, hawthorn, plum, mountain-ash and other related trees. Larvae defoliate trees. Surveys are conducted because of the presence of potential ...