- Color: light brown to red-brown.
- Size: adults and larvae are 1/16 to 1/8 inch long.
- Humpbacked appearance; the head is not visible.
- Pits on their wing covers are arranged in long rows.
- Antennae end in a distinct club composed of three elongated segments.
- Larvae are C-shaped, relatively hairless, and do not have a fuzzy appearance.
Habits of Drugstore Beetles:
- Females lay their eggs singly in or near the food they are infesting.
- Developmental time (egg to egg): about seven months.
- In houses, it is generally thought that drugstore beetles have one generation per year.
- They readily penetrate packaging materials.
- Adults can fly and are attracted to light.
Damage Caused by Drugstore Beetles:
- Feed upon all types of foods and spices, leather, wool, hair, books, drugs, and museum items.
- Evidence of infestation in stored products and storage areas.
How to Control and Kill Drugstore Beetles:
- Heavily infested materials should be discarded.
- An alternative to disposal is heat treatment (140 to 176 F for several hours) which kills all life stages of the drugstore beetle.
- Pheromone traps are available and can be used to identify areas of activity.
- Books and manuscripts, furniture, and other infested materials that are not easily replaced might need to be fumigated by a professional in order to control drugstore beetles.
- Pesticide applications are supplementary to the elimination of infested material and should never be used as the sole means of control.