Aphids of some sort? They're all over my patty pan squash and pumpkins. It's too late to save them this year (the plants are dead / yucky now) but I do want to know if I should get rid of them, somehow, and how to keep them from coming back next year.

EDIT: OK, so it seems either these are annoying Squash bugs and I should just cleanup this year, then watch better next tear. OR, they're BM Stink bugs, the spawn of Satan, and I'm doomed to sleep with the unkilkable beasts forever now. Neat. Does it help to know they're ignoring my tomatoes and peppers?

Thanks!