The term "brown beetles" encompasses a wide variety of beetle species that share a common characteristic: their brown coloration. This color can range from light tan to dark brown or even reddish-brown. Here are a few examples of common brown beetles:

Drugstore Beetles: These small, reddish-brown beetles are notorious for infesting stored food products like flour, grains, and spices.

Flour Beetles: These are another type of small, reddish-brown beetle that infests stored food products.

Carabid Beetles: Also known as ground beetles, these are often dark brown or black and are beneficial predators of other insects.

Rove Beetles: These beetles are typically dark brown or black with short elytra (wing covers) that expose their abdomen. They are often found in decaying organic matter.

Bark Beetles: These small, brown beetles bore into the bark of trees, causing significant damage.

To accurately identify a specific brown beetle, it's helpful to consider factors like size, shape, habitat, and any unique markings or behaviors. If you're dealing with a pest infestation, consulting with a pest control professional for proper identification and treatment is recommended.