Definition
'Gipsy moth' is simply an alternative spelling of 'gypsy moth'. Both terms refer to the same defoliating insect, Lymantria dispar. It's like saying 'gray' versus 'grey' – same thing, different spelling. This moth is infamous for its appetite for leaves and its status as an invasive species. The important part is recognizing that they are the same thing. Language can be tricky!