European Chafer beetles are now active in the Bangor region of the state (and have likely been out for a little while already in areas south of Bangor). The adult is a 1/2 inch long, golden tan to light brown, oval-shaped June beetle [photo courtesy of USDA ARS]. These beetles emerge from the ground annually at this time of year (June & July), just as it is getting dark, and take off in search of eligible mates. Females begin laying eggs (in the soil) just a day after mating, and the eggs hatch in 2 to 3 weeks into tiny white grubs–the destructive stage of this pest–which begin feeding right away on grass roots. The grubs continue to feed on the roots of grasses throughout the summer and again the following spring, chewing them off and killing the grass in the process. So if you are seeing these beetles swarming in your area, and/or you have areas of turf that have been victimized in the past by this pest, now is the time to be preparing to take control measures, if that is on your agenda!
Detailed Fact Sheets: European Chafer (Purdue) – see also pdf (Cornell), and for more about the grub stage of this and other similar lawn and turf pest beetles, visit: White Grubs in Lawns (University of Illinois) and White Grubs in Home Lawns / pdf (Penn State)
Rose Chafers are also active now.