Spider Beetle

Natural Habitat

Typically found indoors in pantries, warehouses, libraries, and museums. They prefer dark, damp areas such as cracks in flooring, wall voids, and near food sources but are often seen in bathrooms or sinks.

Diet & Feeding

Scavengers that feed on a wide variety of dried organic materials, including dried foods (grains, flour, seeds), dead skin cells, mammal droppings, wool, hair, and dried insect specimens.

Behavior Patterns

They are nocturnal and forage at night. Their smooth, rounded bodies and long legs give them a spider-like appearance, which is a key identification feature. They are flightless and often feign death when disturbed.

Risks & Benefits

Generally harmless to humans (they do not bite or sting). However, they are considered pests because they can infest and contaminate stored food products and damage organic materials like museum specimens or taxidermy.

Identified on: 2/10/2026