Part 3 tentatively studies the cladistic of 22 genera occurring in china and all the works are finished by using hennig 86 software which is provided by dr . wei of central south foresty university . the followings are the descriptions of 6 new species . 1 区系分析部分就中国大叶蝉亚科种在世界6大动物地理区分布以及在中国7个动物地理区的分布进行了统计和归纳，就有关方面的问题进行了讨论。
