Dragonflies. An efficient and time-tested model. Basic morphology that's remained unchanged since long before the extinction of the dinosaurs. Phenomenal creatures whose legacy survived 250 million years.
Tremendously efficient - do I recall the dragonfly being the most effective predator, where effective is defined as highest proportion of successful hunts?
Looks like it's a species of meadowhawk, this one is called either a red-veined darter or a nomad (Sympetrum fonscolombii). Great pic! Dragonflies are a lot of fun and a great challenge to photograph.