This is the second year I've found these on my tomato plants. They eat the leaves very quickly and poop all over the place. Last year, I was able to control them by picking them off rigorously & I've been doing the same thing this year. They drop off quickly if you try to grab them, and are kind of bumbling. I saw a few about a week ago, mating maybe? They were connected end-to-end. They seem like a match to the gray blister beetle, but mine don't look as downy as the others I've seen here and elsewhere. I've also read you shouldn't handle blister beetles, but I've handled them extensively (picking off hundreds by hand without gloves) with no problems. I'm concerned about controlling them and what they typically infest, as I keep sheep and I've read they're very toxic to livestock.