Perithemis is a genus of dragonflies commonly known as Amberwings.
They are characterized by their small size and the amber wings of the male.
It seems that Guatemala only has 5 species in the genus Perithemis.
I have done a little bit of research and I think that the species on my photo may be either Perithemis mooma, Perithemis domitia or Perithemis capixaba.

Los Tarrales Natural Reserve, Patulul, Suchitepequez, Guatemala, 18 January 2020