A brand new paper out in the journal Environmental Entomology describes a possible new method to trap the beetles, using chemicals that their host plant (Ash trees) release:
“In a field test comparing and combining Phoebe oil with Manuka oil, Phoebe oil-baited traps caught significantly more beetles than either Manuka oil-baited traps or unbaited traps.”
The full title of the paper is:
Development of a Host-Based Semiochemical Lure for Trapping Emerald Ash Borer Agrilus planipennis (Coleoptera: Buprestidae)
There is also some bad news in this same issue of the journal–evidence that Japanese Beetles feed plants grown under high CO2 conditions laid more eggs, and lived longer. Damn it.
Longevity and Fecundity of Japanese Beetle (Popillia japonica) on Foliage Grown Under Elevated Carbon Dioxide.
“Females consuming elevated CO2 foliage laid approximately twice as many eggs as females fed foliage grown under ambient conditions….Although the precise mechanism is unclear, by altering components of leaf chemistry other than sugar content, elevated CO2 may increase populations of Japanese beetles and their impact on crop productivity.”
Also–if you see ads on this page (and you probably will) I have no connection with those. They seem to have multiplied out of control recently. I am investigating getting them stopped, or moving (UGH!) to a new host.