Sexual Dimorphism in cockroach

                   

         Sexual Di-morphism in cockroach

Sr. No.	Male Cockroach	Female Cockroach
1.	Presence of anal style in the last segment is an important sexual dimorphic character.	Absence of anal style in the last segment
2	Antennae longer than the body.	Antennae longer than the body.
3.	Three podomers of antenna are smaller	Third podomers are smaller than 2nd podomer.
4.	Abdomen is long, narrow and dorso-ventrally flattened.	Abdomen is short, larger and broad.
5.	Wings are long and large, extending beyond the length of the body.	Wings are short and narrow i. e. smaller than a body.
6.	Male genital opening present at 9th and 10th segment	Female genital opening present in between the 6th and 9th segments.
7	Abdomen Long	Abdomen short and narrow
8	Abdomen shows nine distinct segments.	Only seven abdominal distinct segments.