May/june Beetle
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May 11, 2016
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The May/June beetle is taking flight in the transitional zone of the United States. The adults are ½ to 1 inch in length and are a reddish-brown to black color. At this time these adults often crash into the sides of houses and into windows. Since the May/June beetle is nocturnal they are active during nighttime hours. The adults will not cause damage to ornamentals unless large numbers of the adults are present. Larvae of these beetles are white grubs, with feeding habits similar to masked chafer and Japanese beetle grubs. However, the May/June beetle grub prefers pasture grasses and thus is not a serious problem, except on golf courses established near pastures. The larvae may take between 1 to 5 years to complete their life cycle.