genus Lymantria
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| Noun | 1. |  genus Lymantria - type genus of the Lymantriidae; a pest (Lymantria means `destroyer')arthropod genus - a genus of arthropods family Lymantriidae, Lymantriidae - tussock moths gipsy moth, gypsy moth, Lymantria dispar - European moth introduced into North America; a serious pest of shade trees |