Hi! My first thought is either flea beetles or hornworms (or some other kind of caterpillar). If the holes are small and round, I would lean toward flea beetles. If the holes are larger and more irregularly shaped, hornworms. Not sure about powdery residue, but little dark pellets suggest caterpillars (that's their doodoo, take notice of where you see it, then check the underside of the leaves right above it for a hornworm).

I a new gardener (well, back to it after a few tries!) and I have learned a lot by doing searches of the old threads on these boards. Scroll to the bottom of the page and you'll find a search box. Try looking for hornworms and flea beetles and I'm sure you'll find a lot of reading material. Also, on this forum there is a FAQ section at the top (not all forums have them).

I wish you luck with your tomatoes--I'm fighting BER right now.

Michelle :-)

I say flea beetles. A few of the leaves on my plants are starting to look like lacework, and I had a tiny shiny black beetle on my arm today; I poked at it (to make sure it wasn't a tick) and it jumped. I don't generally have flea beetles, so I'm guessing it's a good year for them in the hotter parts of the Bay Area.

They're not easy to deal with, but small numbers aren't terribly harmful if the plants are growing well. They love eggplant, though, and will eat that to bits. :/

--Alison