[1] The larva is longer than the adult and is covered in reddish brown or black setae.

Mature larvae of both species tend to bore into hard substrates such as wood, cork, and plaster to pupate.

[4] Adult larder beetles are generally 1/3 to 3/8 of an inch long and are dark brown with a broad, pale yellow spotted band across the upper portion of the elytra.

The sternum and legs of the larder beetle are covered in fine, yellow setae.

Adult larder beetles are typically found outdoors in protected areas during the winter, but during the spring and early summer they enter buildings.