The damselflies in the genus Hetaerina (37 species) are commonly known as Rubyspots because of the deep red wing bases of the males.
Some Rubyspots can prove tricky to identify, but not Hetaerina cruentata.
In this species there is a metallic green wedge-shaped spot on the sides of the thorax.
This spot is most easily seen in the 3rd photograph.
No other species has this spot.
Hetaerina cruentata ranges from Mexico to Brazil.

Los Tarrales Natural Reserve, Patulul, Suchitepequez, Guatemala, 19 January 2020