I believe this is a Damselfly -
The damselfly nymph is predacious. Usually it
lies in wait for other aquatic bugs to get within range and then grabs
them with its 'labium' which is modified lower jaw. The nymph will
proceed through 10 to 12 instars, or molts, before becoming fully
developed and ready to emerge as an adult. With each molt the nymph
becomes somewhat darker in color. Finally the nymph will swim towards
the shore and crawl into shoreline vegetation. While clinging to this
vegetation the nymph's skin breaks along the wing case and out crawls a
shortened version of the adult. Before taking flight, the new adult must
pump body fluids into its abdomen and wings. Depending on the species,
the adult will live for several weeks to several months before mating
and dying.
The adult has four wings that fold over the back. The
male of the most common variety in the interior is blue while the female
is more of a slate color. For the nymph, a fairly large and bulbous
head sits on a tubular shaped body. The eyes of the damsel are fairly
pronounced but not as large or pronounced as the eyes of a dragonfly
nymph. The tail is three feathery looking appendages. The tail is called
the "caudal lamellae" and is actually three gills at the end of the
abdomen.