Abstract: The spatial distribution patterns of overwintering larvae of Apriona germari larva in Morus alba were studied using six spatial distribution pattern analysis methods（m*/ m， C， k， Iδ， I， CA）and two regression equations（Taylor power and m*-m）， the assembling reasons were analyzed with average aggression size λ. The results indicated that spatial distribution patterns of Apriona germari larva population was in uniform distribution. The optimal sampling equation（N=t2（1.0097m-0.1971）/D2） and sequential sampling equation（T（n）=0.2n±0.4405） were established. This paper may provide the basis for prediction and control of Apriona germari.

Key words: Apriona germari Hope, overwintering larvae, spatial distribution pattern, sampling techniques