Subject: Pls identify
Location: Southern Ontario, Frankford
June 6, 2016 5:14 pm
We have recently planted 32 various tree and shrubs on our property including maples spruce pines dogwood aspen etc and now have them ALL covered with these beetles. Can you pls idenitfy and advise on how to get rid of them.
Signature: D DRAKE
Dear D DRAKE,
These are mating Rose Chafers, Macrodactylus subspinosus, and you may verify our identification on BugGuide which states: “Adults emerge in early summer and feed on flowers, some leaves. They live for up to 6 weeks. Mating occurs on food sources. Eggs are laid deep (13-15 cm!) in soil and hatch in one to three weeks. Larvae feed on roots and overwinter deep in soil. Pupation in early spring in the soil, just under the surface. Adults contain cantharadin, can poison chickens, other birds.” We do not provide extermination advice, but now that you know what you are dealing with, you can do additional research.