Rose, glad you found the net, it will be something you treasure for years. I absolutely love mine, used window screens all over the basement before that treasure came along.
All the last ten years growing I have only had one Hermi. Found those flowers near the stalk, like where a pre flower belongs. Killed that plant. It was halfway along. I still look though, every time I am out with them, my eyes search. Also search for Grasshopper, and now will be looking for the signs of bud rot. You will see a dying leaf coming out of a bud Rose, or a slightly browned or lightened area on a bud (a bud leaf, not a shade leaf, coming right out of the bud). The dying leaf is what I have seen and caught most often. You will also see it more often in a bud that has gone more horizontal to the ground. I guess the water slides down the leaf. Just a couple ideas what you want to watch for. Stone seems to have caterpillars, you got to watch for them too when the buds get this size.
Nice to see you Kaotik, come on by my grow, it is the same ol same ol over there.