Copulation :
The copulation in cockroach takes place in the night in tail to tail position. It’s duration is of one hour. The copulation takes place during breeding season & the breeding season extends from March to September. During copulation, the male opens the female gonopore with the help of phallomeres and insert one spermatophore into the genital chamber. The spermatophore gets attached to the spermathecal papilla and the sperms get stored into the spermathecae. It takes about 20 hours. The empty spermatophore is forced out which is consumed as food by any cockroach. During breeding season, the male is attracted by the pheromone secreted by female cockroach.
Fertilization :
As a result of copulation. 16 ova are released from both the ovaries in the oothecal chamber. The ovipositors arrange the ova into two rows of 8-8 ova. Now the sperms are released on the ova from the spermathecae. Hence, the fertilization takes place in the genital chamber.
