Drugstore Beetle

Stegobium paniceum

Argentine Ant

Drugstore beetle (Pest and Diseases Image Library, Bugwood.org)

Argnetine ant bait trail

Drugstore beetle (Natasha Wright, Florida Department of Agriculture and Consumer Services, Bugwood.org)

Foraging Trail

Drugstore beetle damage (USDA Forest Service Wood Products Insect Lab, Bugwood.org)


  • 1/10 inch long
  • reddish brown to brown
  • head not visible from above
  • antennae with 3-segmented club
  • rows of deep pits on wing covers distinguish from cigarette beetle
  • larvae: c-shaped, white and hairy larvae

Nesting Habits

  • lay eggs in food materials
  • larvae pupate within food materials


  • larvae eat nearly anything but prefer bread, flour, meal, spices and pet foods
  • adults do not feed on food, but can chew through food packaging


  • common pest of stored food in homes and storehouses
  • attack a variety of nonfood products 
  • can cause damage to books 

IPM Recommendations

  • Improve sanitation procedures in affected areas.
  • Inspect all incoming food items for pests.
  • Store all susceptible food items in pest-proof containers.
  • Dispose of infested food items.
  • Keep food in regular rotation.

Additional Resources

IPM for Fabric and Pantry Pests: Integrated Pest Management in Sensitive Environments (University of Nebraska-Lincoln Extension)