The Fascinating Life Cycle and Habits of Biscuit Beetles

When it comes to pantry pests, few insects are as notorious as the biscuit beetle. These tiny creatures can cause significant damage to stored food items, and their rapid reproduction rate makes them a challenging problem for homeowners. In this article, we'll delve into the life cycle and habits of biscuit beetles, exploring how they reproduce, feed, and contaminate food.

Reproduction and Life Cycle

Biscuit beetles can reproduce up to four generations per year in warm countries, with the entire life cycle lasting a remarkable 7 months. Adult beetles emerge from round exit holes covered in gritty frass, which is the excrement of the larvae. Female beetles lay anywhere from 20 to 100 eggs in hard, starchy foods such as dried plants, biscuits, and papier-mâché.

Egg, Larva, Pupa, and Adult

Like other beetles, biscuit beetles undergo four distinct life stages: egg, larva, pupa, and adult. The larvae tunnel into food to feed and grow, while the pupal stage is spent underground, where they transform into adult beetles.

Food Sources and Habitat

Biscuit beetles are attracted to a wide range of foods, including grains, cereals, biscuits, and other dry goods. They can easily contaminate food with their faeces and cast skins, making them a nuisance in pantries and food storage areas.

Behavior and Prevention

Preventing biscuit beetle infestations requires understanding their behavior and taking preventative measures. Since they are not strong fliers, they prefer to crawl, using their short-distance flights to find new food sources or mates. Keeping your pantry pest-free involves storing food in airtight containers, cleaning up crumbs and spills promptly, and avoiding exposing food to moisture.

Identification and Treatment

Identifying biscuit beetles can be challenging, as they resemble other types of beetles. However, their reddish-brown color and 2-3 millimeter long body make them relatively easy to spot. If you suspect an infestation, it's essential to consult a pest professional for identification and treatment.

Biscuit beetles are a significant problem in food storage areas, causing contamination and damage to stored goods. By understanding their life cycle, habits, and behavior, homeowners can take steps to prevent infestations and keep their pantries pest-free. Whether you're a homeowner or business owner, staying vigilant and taking preventative measures is essential for maintaining a safe and healthy environment.

Biscuit beetle baby