All sized holes, some of the tomatoes are halve eaten. I'll try to remember to get some pictures, I usually do not have my phone (camera) with me when I'm out in the garden, and i will just toss the bad ones out into the brush.
I think BT will help - those hornworms blend in perfectly not only with the color but with their markings. Still, go out at night and take a look by flashlight. That's when a lot of damage is done, when insects are less likely to be detected by their predators.
Tobacco hornworms and tomato hornworms are the larval stages of different species or varieties of sphinx moths. But they aren't exclusive to those plants they're named for. The tobacco/nightshade family includes tomatoes, potatoes, eggplant, peppers, and more. And these hornworms will devour many members of the family. So yes, your potatoes could be clobbered by hornworms.
I generally find tobacco hornworms in my tomatoes, but I've also pulled them out of peppers. And though it isn't the same plant family, they also eat my ornamental jimson weed/sacred datura. I leave them alone there, since I have no interest in harvesting anything from those plants.
I think it was the redwing black birds that had been tearing up the green tomatoes. I noticed that after the huge flock of them had moved on after a week or two, I have only found a few tomatoes with holes pecked in them.
I have been checking the tomoato plants and haven't found any more horn worms, but I did find some stink bugs (I think), going to check in the bug book (once I find where my helpers hid it) to tend to those pest.
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