Q: I have been experiencing a beetle problem at my Carr Canyon property over the last two years. I have attached a photo of the beetle and a June bug, I think. I donβt have photos of the damage, but I have several oak trees without a single leaf. I noticed this same occurrence, a large oak with no leaves, at my neighborβs house and his house is on the National Forest property line, hence my concern. I am hoping something can be done and I am willing to take any action you might suggest.
A:Β The beetles in your photo are both scarabs and are sometimes referred to as June beetles. The dark green beetle is also sometimes called a fig beetle because of their attraction to ripe fruit β not only figs, but anything from peaches to tomatoes. As adults, they also feed on nectar and pollen and can be found on large flowers. The larger, light green beetle is called a Beyerβs scarab and a likely suspect since it feeds on oak leaves. These beetles are not widespread and not really considered a pest insect. If they are having a high population this year and last year, they may be doing more damage than usual. No management is recommended because the trees will recover.
Peter L. Warren is the forest health program coordinator for the Arizona Department of Forestry and Fire Management. Questions, photos and videos may be emailed toΒ tucsongardensage@gmail.com
