Appalachia hebardi (Rehn & Rehn)
USA: Pennsylvania; Augusta County, Bath County, Page County, Shenandoah County / Virginia; West Virginia
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extinction date: before 1970
Gypsy Moth (Lymantria dispar (L.)) was unintentionally introduced
in the 19. century to the USA, where it became a serious agricultural
pest, as its larvae feed on the leaves of several cultivated fruit trees.
Insecticid spraying to control this moth, for example with DDT, led to the
disappearance of countless native insect populations (or whole species in
some cases) in the sprayed areas.
The Appalachian Grasshopper, which was distributed within some of the sprayed areas, is probably one of several victims.
The species was last seen in the 1960s, and is now considered probably extinct.