I have heard that bats eat beetles. Are they known to eat Japanese beetles in our area?
Arapahoe County Colorado
We don't know to what degree bats are focusing on Japanese beetles here in Colorado.
When the weather cools down in the evening, Japanese beetles will slow down their movements. They are less likely to fly at night. They are active on warm, sunny days.
Most bats will hunt arthropods in flight at night, but we do have one bat, the pallid bat, that is a specialized gleaner. It will hunt arthropods on veg and the ground, taking things as large as tarantulas, scorpions, centipedes, and even small rodents.
Bats can feed on Japanese beetles, but they may feed on other insects in flight first.
Please let me know if you have any questions.