Disperse coefficient (C),Cassie index (C A ),clumping index (I) and patch index (m /m) were adopted to measure the spatial distribution pattern of sucking lice.

• 吸虱空间分布格局用分布型指数中的扩散系数 (C)、Cassie指数 (CA)、丛生指数 (I)及聚块指数 (m /m)测定。