Which roach species has adult females that are black with wings covering about half the abdomen?

The Oriental cockroach is characterized by its adult females, which are notably black and possess wings that extend to about half the length of their abdomen. This specific feature is a distinguishing characteristic of the Oriental cockroach, making it easy to identify among other roach species.

In contrast, the German cockroach has light brown coloration and is smaller in size, with females having undeveloped wings that do not cover their abdomens. The Brown-banded cockroach also differs in appearance, often showing band-like markings across its wings, and its females have shorter wings that do not cover the abdomen entirely. Lastly, the American cockroach is much larger, with reddish-brown coloration and females whose wings cover the entire abdomen, which sets them apart from the Oriental cockroach.

Identifying the Oriental cockroach correctly is essential for understanding pest management and behaviors associated with various roach species.