Here's a breakdown:

* Herbivores: Many beetles are herbivores, feeding on plants, leaves, fruits, and flowers. Examples include the Colorado potato beetle and the Japanese beetle.

* Carnivores: Some beetles are carnivorous, hunting other insects, spiders, and even small vertebrates. Examples include the tiger beetle and the ground beetle.

* Omnivores: Other beetles are omnivores, feeding on a mix of plant and animal matter. This can include decaying matter, fungi, and even pollen. Examples include the dung beetle and the rove beetle.

So, it's important to know the specific species of beetle you're interested in to determine its diet.