I could just cry! This morning when I went out to water the garden, I found several of the zucchini plants had been "attacked" and turned to "lace". Every single leaf on several plants now looks like this. While I'm sure the damage didn't REALLY happen overnight, it appeared to happen that quickly -- the plants "appeared" to be fine yesterday. Clearly they weren't.
It took me a bit to figure out what caused the damage -- I was looking at the eaten away leaves and only finding little black sandy looking particles (which I now assume are the turds of the critter that ate the leaves). I think I identified the problem on a nearby leaf. Cabbage Loopers. Little green "inch worm" type caterpillars that feed on the bottom side of leaves. They follow the veins of leaves, eating away the fleshy part of leaves. Clearly, we have an infestation.
I've got to get some BT, ASAP! ...it's too late to save all of the plants, but I can try to save those remaining. Unfortunately, they attacked my "late" crop of zucchini, the plants that were to provide zucchini well into fall. Some of the plants hadn't even provided their first zucchini yet.