Smooth Spider Beetle
Scientific Name: Gibbium aequinoctiale
Order & Family: Order Coleoptera, Family Ptinidae
Size: 2mm to 3.5mm (approx. 1/8 inch)

Natural Habitat
Often found in old buildings, granaries, warehouses, and homes; they prefer dark, damp locations.
Diet & Feeding
Scavengers that feed on organic matter including dried animal products, seeds, grain, leather, and wool.
Behavior Patterns
Nocturnal and slow-moving; they are flightless and often mistaken for spiders or ticks due to their globular bodies and long legs.
Risks & Benefits
They do not bite humans or transmit diseases but are considered a nuisance pest as they can contaminate stored food products and damage fabrics.
Identified on: 4/14/2026