Damselflies, sometimes mistaken for dragonflies are typically quite small. Their colors are usually what make them stand out otherwise they can be so small and thin that it is hard to spot. This one has a nice vibrant blue color which helps it stand out against the green leaves it clings to.
Nikon D750 1/160 sec. f/11 ISO-100 at 105mm
This one has a different pattern, little bit a light blue but mostly a metallic look that makes it seem shiny in the sun as it clings to a leaf.
Nikon D750 1/100 sec. f/13 ISO-100 at 105mm