Utah State University Extension
Pantry pests are insects that infest whole or processed food in the home. Infestations can start out with just a few insects, but a population can quickly surge if given a proper food source and a place to reproduce. Immature and adult insects are typically brought into a home in grain-based products.
Hodgson, Erin W. and Roe, Alan H., "Pantry Pests" (2006). All Current Publications. Paper 925.