Blatta orientalis, commonly known as the Oriental cockroach, is a medium-sized cockroach species. Typically found in cool, damp environments such as basements and drains, they are adept at hiding. Notable for their glossy black or dark brown appearance, they are slower and less agile than other cockroach species.

Blatta orientalis, commonly known as the Oriental cockroach, is believed to have originated in the regions around the Black Sea and Caspian Sea in Eastern Europe and parts of Asia. However, due to human activity, it is now found in many temperate regions around the world.

The Oriental cockroach typically inhabits cool, damp environments. It is often found in basements, sewers, drains, and other areas with high humidity and moisture. The species prefers temperatures ranging from 20°C to 29°C (68°F to 84°F) and is less tolerant of dry conditions compared to other cockroach species.

Blatta orientalis plays a role as a scavenger in its ecosystem, feeding on a variety of organic matter. Its presence is often associated with decaying organic material, making it an important part of the decomposition process. The species is known for its ability to survive in urban environments, often thriving in areas where human activity provides ample food resources and shelter.