The dragonfly this morning

I've found a black beautiful dragonfly stopped on the leave in front of me when I walked my dog early in the morning.
I've never seen such a black dragonfly and wanted to take a shot but it flied far away at once.
I looked for the black dragonfly on line and got it. 

It's " damsel‐fly " in English.
The Japanese name is " haguro tombo ".
It was really beautiful and mysterious.
I want to see it again.