These cockroaches are dark brown to mahogany in color and measure approximately 30-35 mm in length. They are characterized by a distinctive dark, shiny thorax. Primarily feeding on stored timber, they are commonly found inhabiting fences, subfloor areas, and other wooden structures. Their strong preference for wood and outdoor environments sets them apart from other common indoor cockroach species, making them particularly challenging to control in areas where wood is stored or used extensively.