What is the primary food source of larder beetles?

The primary food source of larder beetles is indeed lard and other fats. These beetles are part of the Dermestidae family, which are commonly known as skin beetles. Larder beetles are particularly attracted to animal products that contain high amounts of fat, such as meats, cheeses, and oils. In their natural habitat, they play a role in the decomposition of organic materials, particularly dead animals, where they feed on the fatty tissues. This feeding behavior is what distinguishes them from other types of beetles that may consume wood, grains, or plant matter. By targeting fats and oils, larder beetles can thrive in environments where these food sources are available, demonstrating their specific dietary preferences and ecological roles.