Has anyone seen a black dragonfly? Who knows? I want to know more.

Black viper belongs to HOMOPTERA, Chrysopaceae. The black webbed body is large, and the chest is black and green with a little luster; Wings are black or brown; Covered with long thorns; The back of abdomen is green, metallic and black. Most people live near ponds and rivers, and their flying ability is not strong. The body length is 55 mm and the wing length is 80 mm. Mainly distributed in Beijing, Northeast China, Jiangsu, Zhejiang, Fujian, Shaanxi, Hunan, Guangxi and other places.

As for why it is black, it is equivalent to asking you why Zhang is the same and was born in 1994, so I can't answer.