Ptinus bimaculatus, commonly known as the two-spotted spider beetle, is a small insect belonging to the family Ptinidae. It is approximately 2-3 mm in length and has a shiny black or dark brown body with two distinct yellowish spots on its elytra. This beetle is often found in stored food products, such as grains, cereals, and dried fruits, where it feeds on organic matter. It is considered a pest due to its ability to infest and damage stored goods.