What type of beetle is this?
June 8, 2010
Can you please help me to identify this beetle? There are thousands all over our yard right now, clinigng to plants in dozens and mating. We are worried that they may be harmful to our trees (white pine, red pine & jack pine)
Sincerely, Ken Hall
This is a Rose Chafer, Macrodactylus subspinosus which is profiled on BugGuide, or Macrodactylus angustatus which according to BugGuide, is very similar and difficult to differentiate from its near relative. According to BugGuide: “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. Larve feed on roots and overwinter deep in soil. Pupation occurs in early spring in the soil, just under the surface. Adults contain cantharadin, can poison chickens, other birds.“
Thank you very much for your identification. Knowing that they don’t harm trees, we can just let them get on without worrying about them J