This is my first year growing Malali watermelon. I got the seeds from Baker Creek. The two vines look healthy and near 6' up a nylon net trellis with a few melons starting to put on size. A few days ago I noticed a few black specks scattered over the leaves. Yesterday, it looked like someone used a can of pepper and dusted the entire plant. I looked over each plant and found a few caterpillars. They are about a 1/4" and green. They don't seem to cause a lot of damage. Mostly all I have seen is they cut a leaf and bend it back on themselves and use silk to keep the leaf wrapped around them, assuming to make a cocoon. I did see where something, assuming caterpillar, has scraped on the rind of my largest melon (about size of a lime). I searched over the plant and squeezed about 5 to 10 cocoons until I felt a light pop.

Revenge is sweet. I have taken the fight to all caterpillars and grubs since they have wrecked my squash and pumpkins, but I digress.

Anybody else have or seen this kind of infestation of caterpillars on watermelons? Should I be worried? Should I take more action and spray BT or use other organic treatment? Thanks in advance for any advice y'all have.