What Is The Difference Between A Male And A Female Cockroaches?

Male cockroaches have these horn-like nodes on the top of their head and then it becomes totally smooth and black on their bodies after that.  Female cockroaches have entirely smooth heads with shorter antennae and they are all shades of a lighter brown unlike males who range from deep brown to a midnight black.

Anal style is present in male cockroach and is absent in female cockroach

Female cockroaches are generally larger than the male cockroaches

Anal style is present only in male cockroach only

Their length

Th 8th and 9th abdominal segments of females are covered by the 7th segment