小地老虎雄性外生殖器的肌肉系统及神经分布

THE MUSCLES AND INNERVATIONS OF THE MALEGENITALIA OF AGROTIS YPSILON ROTT.

小地老虎ＡｇｒｏｔｉｓｙｐｓｉｌｏｎＲｏｔ．雄性外生殖器由第８腹节的５对肌肉支持，它具有充分功能的抱器（ｃｌａｓｐｅｒ）和第９腹节的侧骨片，具有８对外生殖器特有的肌肉。具有一对由第９，１０，１１节原始腹部神经节的侧神经组成的成对的粗大神经干９＋１０＋１１，神经干的神经分支分布神经到外生殖器。

The genitalia of male Agrotis ypsilon Rott. originated from the eighth abdominal segment is supported by 5 pairs of muscles. It has fully functional clasper and pleurite in the ninth abdominal segment. There are eight pairs of muscles in the genitalia.There are a pair of think nerve trunks named 9+10+11 rising as the lateral nerves of the ninth, tenth and eleventh primitive abdominal ganglions. The muscles of the male genitalia are innervated by the nerve branches of the nerve trunks.