Yellow spots and shriveling leaves?? can any one help

[stinkyattic]

you say ants, and i know some species of ants hang out where there are aphids...

Problem is, aphid damage is generally right at the base of the petiole where it attaches to the plant, and the peppers and tomatoes that I have seen carrying a heavy infestation have simply dropped leaves when the aphids got bad- there were no visible chew marks on the leaves, because as you posted, aphids have SUCKING mouth parts.

This really does look like the damage of an insect with larger CHEWING mouth parts, such as a grashopper or caterpillar, although damage associated with the latter is often simply half-round missing chunks of the leaf.