Solution:
Male cockroaches possess anal styles, phallic and mushroom glands. They lack collaterial glands.
Collaterial glands are present in the female cockroaches which secrete a cementing substance for the formation of ootheca.
Male Periplaneta lacks
Male cockroaches possess anal styles, phallic and mushroom glands. They lack collaterial glands.
Collaterial glands are present in the female cockroaches which secrete a cementing substance for the formation of ootheca.