The correct option is C Reduced wings in Blatta and developed wings in Periplaneta
Blatta and Periplaneta are both the genus of cockroaches. But there are certain differences between the two.
Periplaneta is larger while Blatta is smaller.
The wings of Periplaneta are longer than the body in both males and females. The wings do not extend beyond the abdomen of the male in the case of Blatta and are vestigial in female Blatta.
Therefore, the correct answer is option A.