The JBs are horrid this year. Totally have trashed ALL my roses. And Hibiscus. I have found them on ~ 3 dozen different species!
In the last two days I have collected ~ 200 or so. I hold a sandwich baggy under them and shake them in. I also have about an ounce of Neem oil in the bag. Then I zip it up and lay it on concrete.
Aphids and JBs are two things I cut NO slack. NONE.