Smooth Spider Beetle
Scientific Name: Gibbium aequinoctiale
Order & Family: Coleoptera; Ptinidae
Size: 1.5 to 3.5 mm in length

Natural Habitat
Typically found in pantries, warehouses, museums, and attics where they scavenge specialized organic matter.
Diet & Feeding
Scavenger of dry organic materials including grain, dried fruit, flour, animal droppings, and silk.
Behavior Patterns
Primarily nocturnal and active in dark, damp locations. They are flightless and often mistaken for spiders or bed bugs due to their rounded abdomen and long legs.
Risks & Benefits
They are considered a minor domestic pest because they can contaminate stored food products, but they do not bite humans or pets and carry no known diseases.
Identified on: 3/12/2026