Adults: About 3/8" long; metallic green and bronze in color with a row of white tufts on each side of body.
Pupae: First cream-colored, becoming light reddish-brown with age. About ½” long.
Larvae: Common C-shaped white grubs found in lawns, turf or cultivated fields.
Eggs: Tiny white eggs are deposited in the soil where they hatch.
Life History: Grubs overwinter about 8" below the soil surface, moving up when the surface temperature reaches 60°. Pupation begins in June, with adults emerging through July, feeding and mating. The female burrows into the soil to lay eggs about 2-4" deep, where they hatch into grubs which begin feeding on roots and organic material. As winter approaches, the grubs burrow deeper to overwinter.
Many vegetables, fruits, fieldcrops, ornamentals, turfgrass.
Larvae (grubs) feed on roots of turf-grass and other plants. Adults feed on leaves,flowers, and fruits of many plants.
Adults are not effectively controlled with scented traps.
Bio controls: Bacterial Milky Disease is effectivegiven enough time, and a parasitic nematode iseffective.
Cultural Controls:Dry soil inhibits developmentof eggs and 1st stage grubs. Don’t irrigate during that time.
Physical Controls: Hand picking. Pheromone traps may attract more beetles than they control,causing increased plant damage.