Darkling beetle (likely a mealworm beetle)

Worldwide in human-associated habitats, especially grain stores, barns, mills, compost, and beneath debris. Adults may wander outdoors on dry ground.

Adults and larvae eat stored grains, flour, cereal products, decaying plant matter, and other organic debris.

Mostly nocturnal and ground-dwelling; adults hide under cover during the day. Females lay eggs in food substrates, and larvae are the familiar mealworms used as animal feed.

Generally harmless to people and not venomous, though infestations can contaminate stored food. Larvae are valuable food for birds, reptiles, fish, and other animals and help recycle organic material.