Smooth Spider Beetle

Natural Habitat

Typically found indoors in pantries, warehouses, museums, and grain storage areas, often in dark or damp locations.

Diet & Feeding

Scavengers that feed on a variety of dried organic matter including grain, seeds, flour, dried fruit, spices, animal skins, and even natural fibers.

Behavior Patterns

They are nocturnal and have a distinctive hump-backed appearance that resembles a spider or a large mite. They are slow-moving and cannot fly.

Risks & Benefits

They are considered a minor household and stored-product pest. While they do not bite or transmit diseases to humans, they can contaminate food sources and damage organic materials like leather or book bindings.

Identified on: 6/21/2026