Orangestriped Oakworm (Anisota senatoria) (1917 GDDs = Egg hatch)
Overview and Host Plants: Orangestriped Oakworm larvae are summer caterpillars. They feed & cause damage primarily during August & September. Host plants include oaks (primarily within the red oak group) & can occasionally be found feeding on birch, maple, chestnut, & hickory trees.

Orangestriped Oakworm mid-instar larvae defoliating pin oak leaves. Photo Credit: Steven K. Rettke, Rutgers Coop. Ext.
Adult Moths: Female adult moths can have a wingspan of up to 2 inches & are orange to brown in color (each wing has a white spot near the middle of the wing with dark stripes that dissect them). Adult moths are first seen during the summer in early July & begin laying eggs before the end of the month. There is a single generation per year in the northeastern regions of the country. Further south, there can be 2 generations per year.




