Drugstore beetle

The drugstore beetle (Stegobium paniceum), also known as the bread beetle or biscuit beetle, is a tiny, brown beetle that can be found infesting a wide variety of dried plant products, where it is among the most common non-weevils to be found. It is the only member of the monotypic genus Stegobium. The drugstore beetle has a worldwide distribution though it is more common in warmer climates. It is similar in appearance to the cigarette beetle (Lasioderma serricorne), but is slightly larger (adults can be up to 3.5 mm in length). Additionally, drugstore beetles have antennae ending in 3-segmented clubs, while cigarette beetles have serrated antennae (notched like teeth of a saw). The drugstore beetle also has grooves running longitudinally along the elytra, whereas the cigarette beetle is smooth.