英语语法分析

Sucking lice are exclusively hematophagous ectoparasites of eutherian (placental) mammals, and are worldwide distribution.

吸虱是寄生于真兽类哺乳动物体表的专性吸血寄生虫，广布于世界各地。

Conclusion The investigation provides the reference for species distribution, community composition and studies of infectious disease by hematophagous Culicoides.

结论 为中老边境吸血蠓种类分布、种群组成和蠓媒疾病的研究提供了参考依据。