PA does not distinguish between short or long term capital gains/losses. PA also does not allow the carry of a loss from one year to another. PA also does not allow you to offset other income with a capital loss. (Can't offset wages with capital loss).
So you report it, but if the total of all gains & losses is a negative, the loss does not effect your taxes.
However, if the total of all capital gains & losses is a positive (gain), it is taxable by PA.