This is a big, handsome, black dragonfly with spotted wings. In addition to its size, the male Twelve-spotted Skimmer is easily recognized by its wing spots. Females have a brown body with yellow lateral stripes with similar wings to the male, but lack the white patches.
These insects have two sets of wings. They have twelve dark brown or black wing spots (three spots per wing) – hence, the name “Twelve-spotted.” The Twelve-spotted Skimmer averages just over two inches in length and their wingspan is just under two inches.
Dragonflies are very efficient hunters and catch their insect prey by grabbing it with their legs. Adult Twelve-spotted Skimmers will eat almost any soft-bodied flying insect, including mosquitoes, flies, butterflies, moths, mayflies and flying ants and termites.
Skimmers are the most common and colorful members of the dragonfly family. Their wings are held flat and extend outward from the body when at rest.
Males typically are very territorial at breeding sites, displaying aggression by chasing competing males in what can be likened to an aviation performance of vertical loops and side-by-side flight displays.
The Twelve-spotted Skimmer is found in southern Canada and in all 48 of the contiguous United States. Its habitat is ponds and nearby fields. As visual hunters, nearly all of a dragonfly’s head is eye, so they have incredible vision that encompasses almost every angle except right behind them.
It is always cool to see one of these fine creatures when out and about. Dragonflies were among of the first winged insects to evolve, some 300 million years ago and had wingspans of up to two feet.