What is eating my potato leaves?

[Aspen]

It looks like something has been eating the heck out of my potato leaves. I don't see anything in the area except small grasshopper/cricket type bugs. What to do, gang? Oddly, they are only eating on one kind of potato, not the other. Strange.

[Sinfonian]

Is the damage bad or just a few holes? I always ger a few holes but nothing more. Have you researche potato beetles? I'm not big on potato pests, sorry. Good luck.

[SimplyForties]

Do you have any photos? If you've never seen anything suspicious, it's a night dining creature. Slugs, snails? Put a board at the base of the plant and then come out in the early morning and turn it over and see what's hiding under there. None of this may be helpful but I'm trying to think of ways to get a clue! Good luck! :)