Erythromma viridulum
A smaller damselfly with a body length of 26-32 mm and a hindwing length of 16-20 mm, distinguished by its large spaced red eyes, the male is bronze-black and blue, while the females are more yellowish or greenish-blue. Also called the “small red-eyed damselfly,” the small redeye lives near sunny standing or slow-flowing water such as ponds, lakes, and ditches, as well as sluggish rivers and brackish water, associated with pondweed (Potamogeton spp.), water-milfoil (Myriophyllum spp.), and hornwort (Ceratophyllum spp.). This species flies May through September.
Attribution: Quartl (Wikipedia Creative Commons)
Attribution: gailhampshire (Wikipedia Creative Commons)
female
Attribution: Darkone (Wikipedia Creative Commons)