Update: I can see what these f'ers are doing to the plants - they secrete "honeydew" which then promotes development of a black sooty mold. I saw that on one lower leaf on one plant yesterday. I now see it on another plant - or I'm just looking more carefully. The yellow sticky cards were a bust - didn't catch a single lantern fly since yesterday. The vacuum was a very attractive idea but these things are way too fast! We hardly caught any of them. Is there a special technique? So my husband tried spraying them with insecticidal soap which seemed to work better on the more mature ones that are already red. And we noticed today what we thought were sumac trees just outside the growing area are actually ailanthus - two of them. And they were covered with lantern flies. My husband is cutting them down and herbiciding as I write. Hopefully that will make a difference.
