Predacious diving beetle basically originates in the province area such as Guangdong, Guangxi, Hainan and Fujian, Hunan, Hubei in our country, blame with Guangdong, Guangxi more.

• 龙虱在我国主要产于广东、广西、海南以及福建、湖南、湖北等省区,尤以广东、广西较多。