I don't know what they are, but spraying the plants with BT will take care of any kind of caterpillar. Just go to the garden center and ask for BT. They'll know what you're talking about. It comes as a liquid or a dust. Since those are on the undersides of the leaves, you'll need the liquid so you can spray the backs of the leaves as well as the front.

Deanna

I went to a big box store and asked for BT they said they never heard of it.

Some brandnames are Dipel, Thuricide, and Attack for Caterpillars.

Another way to ask for Bt is to say you want an organic treatment for caterpillars. Then read labels.

Bt is the alleviation for Bacillus thuringiensis..

Thanks so much for the tips! I'll be trying that today!!!