This is a spring species, like P. flavipes. I observed it between May 14 and June 29.
|Male of Petaliaeschna tomokunii. Very similar to P. flavipes|
|But the appendages are quite different, both in dorsal view, as here, and in lateral view (see below). They are decidedly pointed.|
|This is the lateral view (not so sharp, sorry)|
|And this is the all-yellow face and frons|
|A scan of a female in dorsal view, showing the unmarked frons|