Slugs, snails, caterpillars possible -- you must look, day and night, top & reverse of leaves.

Dispatch on sight.

Those holes in the leaves look similar to what the Cabbage Looper or Cabbage Worms might make while the edges look like what I have seen slugs (and snails) do.

Cabbage Loopers and Cabbage Worms, small numbers of them, are easily dispatched by squishing while slugs and snails are harder to control although I have found that spraying with cold caffeinated coffee is an effective deterrent.

kimmq is kimmsr

They aren't worms, slugs, or caterpillars. I don't know what they are either, but despite insecticidal soap, they are eating the leaves right up. They fly when disturbed. I'd really like to know what they are.

Okay, got it. They are white flies. Article here suggests garlic spray for control. http://www.gardenschoolfoundation.org/shoo_white_fly_don_t_bother_me

And more methods here: http://www.getridofthings.com/pests/flies/get-rid-of-whiteflies/

You might have whiteflies (I don't see any) but that is not what made the holes. Whiteflies don't have the right kind of mouth to take chunks out of leaves. They just suck juices, like aphids, which you do have in your photo. The little roundy critters are aphids, but they look like aphid "mummies"--aphids that were murdered by parasitic wasps and their dried empty corpses will sit there long after the wasps have gone.

I don't really understand which response was 'snarky.' Has something been deleted?

cadred46 are you the OP with a new name? If not I don't follow your contributions. If you are you referring to the photos at the top of the post and saying the bugs were white flies, then Fori is absolutely correct. They are not whiteflies, they are aphids, and neither white flies nor aphids are physically capable of making those holes. Responders who suggested slugs, snails or, most likely caterpillars, were on the right track.

Signals crossed, I think. I didn't know what the response "not pleased" meant--actually I still don't. This is the first--and last--time I have posted to an online comment thing. I also don't know what an OP is, but I expect I'm not it.

OP is 'original poster'.

I can't see the words 'not pleased' anywhere in the thread so I am assuming someone has deleted a post resulting in your posts losing their sense. Your first response comes four months after the original conversation so it's hard to understand what you are referring to. Perhaps you can explain what you meant?

I don't know what has happened here but please don't be put off contributing.