Here are two more dragonflies I found at Fukushimagata yesterday. The first is smallish but similar to a larger one of the same family, Orthetrum. Both are the same colours. I hope I got the IDs right. I have a book on dragonflies of Japan in Japanese but had to search the web for common names. I guess I should give references, but I’m sure if you search, you will find the same.
The above and below show both male and female Orthemtrum japonicum, Taiwan Shioya-tombo.
Below: The larger White-tailed Skimmer. This seemed less common than the smaller.