Sawtoothed Grain Beetle

Sawtoothed Grain Beetle

Sawtoothed-Grain-Beetle
  • Common Name(s): Sawtoothed Grain Beetle
  • Order: Coleoptera
  • Family: Silvanidae
  • Common Species: Oryzaephilus surinamensis
  • Commonly Confused With: Other Small Beetles

Characteristics

How to Identify?
Adult Sawtoothed Grain Beetles are small, red to brown colored beetles ranging from 0.25-0.3 cm in length. Identification can be aided by looking at the thorax (second section of an insect right behind the head) of the beetle. They have small projections coming off either side of their thorax in a row.

Habitat

Where do they live?
Adults are mostly found indoors inside of stored goods in the pantry, storage closets, granaries, etc. The most common location to see them is in the kitchen inside whatever they are using as a food source.

Food Source

What do they eat?
They have a wide variety of stored goods that they infest; many are the same goods that Indian Meal Moths frequent. Oatmeal, seeds, chocolate, dog food, bird seed, cereal, and so forth all fall prey to these beetles.

Activity

What do they do?
Their small size allows them access into all sorts of stored goods. They either gain access through small holes or imperfections in the packaging or they wait until the item has been opened and then make their way inside. Their feeding can decrease the value of the product, make it unfit for use, and even encourage fungi and bacteria growth where they damage different goods.

Fun Fact

There are many different types of stored product pests! Check out the following links to look at even more pests you may encounter: https://edis.ifas.ufl.edu/in027
or  http://extension.uga.edu/publications/detail.html?number=B1378&title=Stored%20Product%20Pests%20in%20the%20Home

Author: G. Wyatt West– B.S.E.S University of Georgia 2017; Board Certified Entomologist

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