Contact Us

Stored Product Pests - Weevil

Stored Product Pests

FSS, Inc. specializes in monitoring and controlling SPP. This sub-set of insects are very damaging to commodities and food. These pests alone are responsible for billions of dollars in losses every year.

Stored Product Pests are often very difficult to control. FSS, Inc. is a full-service pest management provider.  Our experienced staff will be able to help you find the solution to your SPP issues.  

Below are some SPPs that we encounter most frequently. Please contact us if you need help with identification or have an issue at your facility.

 

Rice Weevil (Sitophilus Oryzae)

Description

  • Adults have prolonged head or snout
  • Adults are dark brown with 4 distinct lighter yellowish spots, about 2.5 to 4mm in length
  • Adults are able to fly

Life History

  • Females lay 300-575 eggs over a 5-8 month lifespan
  • Females individually lay eggs within grain kernels
  • Infestation can establish at temperatures as low as 59°F, but development is prolonged
  • Optimum development takes place around 84°F at a relative humidity of 70%

Damage

  • Feed on barley, corn, sorghum, rice, rye, and wheat
  • Grains with round holes are a sign of infestation by emerging adults
  • Can almost complete total destruction of product at high densities
  • Infestation can lead to heating and increased moisture levels in grain

 

Granary Weevil (Sitophius Granarius)

Desctiption

  • Adults have a prolonged head or snout
  • Adults are a uniform dark reddish brown, about 5mm in length
  • Adults are unable to fly

Life History

  • Females lay 200 eggs over a 7-8 month lifespan
  • Females individually lay eggs within grain kernels
  • Infestation can establish at temperatures as low as 60°F, but development is prolonged
  • Optimum development takes place between 78°F to 86°F at a relative humidity of 70%

Damage

  • Feeds on barley, corn, sorghum, rice, rye, and wheat
  • Grains with round holes are a sign of infestation by emerging adults
  • Can almost complete total destruction of products at high densities
  • Infestation can lead to heating and increased moisture levels in grain

 

Please visit our website at www.fsszone.com/education to see more SPP’s and Stored Product Vertebrates. If you have any questions please contact us at (833) 221-2979 or info@fsszone.com.