Bug Identifier
Smooth Spider Beetle
Community identification

Smooth Spider Beetle

Gibbium aequinoctiale

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

Natural Habitat

Commonly found in warehouses, granaries, museums, and old homes. They prefer dark, damp locations like crawl spaces or wall voids.

Diet & Feeding

Scavengers that feed on a wide variety of dried organic matter including flour, grain, dried fruit, rodent droppings, leather, wool, and animal skins.

Behavior Patterns

They are nocturnal and have a distinctive humpbacked, spider-like appearance due to their fused elytra and long legs. They are flightless and move relatively slowly.

Risks & Benefits

Generally considered a nuisance pest. They do not bite or sting humans, but they can contaminate food stores or damage museum collections and natural fibers. They do not pose a direct health risk to humans.