The sap beetles fly to ripening or damaged apples, strawberries, raspberries, watermelons, muskmelons, corn, tomatoes, etc. The beetles bore into the fruit and makes it unfit for human consumption. The picnic beetle tends to attack damaged and overripe or decomposing plant tissues. It attacks undamaged ear corn silks and ripe fruits. They tend to congregate in areas where fruit and vegetable materials are present.