copulatory
1.Copulatory bursa draw out to 3/4on the tail.
2.The results show that the reproductive system is composed of genital organ,copulatory pouch and ovarian groove.
3.The copulatory bursa of the male worms began to develop in the third stage larvae and became well developed in the 25-day young adults. The processes of the development of copulatory bursa were described.
