Bug Identifier
Smooth Spider Beetle
Community identification

Smooth Spider Beetle

Gibbium aequinoctiale

Order & Family
Coleoptera: Ptinidae
Size
2.0 mm to 3.5 mm in length
See this bug in the Encyclopedia

Natural Habitat

Found in dark, damp environments such as warehouses, mills, granaries, and basements; often associated with debris or nesting materials.

Diet & Feeding

Generalist scavengers that feed on dried organic materials, including grain, flour, dried fruit, wool, animal skins, and rodent droppings.

Behavior Patterns

Nocturnal and flightless; their globular, shiny appearance mimics a spider or large mite. They can survive long periods without food and undergo complete metamorphosis.

Risks & Benefits

Primarily a nuisance household pest that can contaminate stored food products; they possess no venom and do not bite humans or pets.