Medium Grubs Choose anal slit Single Slit Double Arch Results: Asiatic garden beetle (Maladera castanea) Black turfgrass ataenius (Ataenius spretulus) European chafer (Amphimallon majale) Green june beetle (Cotinis nitida) Japanese beetle (Popillia japonica) May or June beetles (Phyllophaga spp) Northern masked chafer (Cyclocephala borealis) Oriental beetle (Anomala orientalis)
