The result was that the semivariogram of Erythroneura sudra was described by spherical model,showing an aggregated spatial arrangement,the range was 25.70-37.20m.

• 结果表明，不同时期桃一点叶蝉种群的拟合半变异函数曲线均为球型，空间格局呈聚集型，变程在25.；70－37