These beetles, like the other members of the Anobiidae family, can easily be mistaken for spiders – hence the name. But they definitely have six legs, not eight. The shiny elytra are orange-brown, and the head, thorax and legs are covered in dense, short hair. They have droplet-shaped bodies 2.5 to 3.5 mm long, and long antennae.
The somewhat crescent-shaped larvae are yellowish and hairy. They measure up to 4.5 mm long.