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
Th 8th and 9th abdominal segments of females are covered by the 7th segment
How can you tell the different between a male and female snail