Libellula lydia
Photo by Dennis Paulson
The Common Whitetail is
one of our most frequently seen dragonflies. It grows to
about 1 3/4 inches long and has a stocky body. Males have a
chalky white abdomen
which makes them easy to identify. Males also have a broad,
dark brown band in the center of each wing. Female whitetails have a
brown abdomen with yellowish dash-like markings on the
sides. They have brown blotches in the center of each wing
and at the tips. Both sexes have brown
faces and brown legs. Copyright, Rich
Stallcup Giff Beaton Common Whitetails live
just about anywhere there is water, including lakes, ponds,
marshes,
rivers, and streams. They occur in very large numbers at
beaver ponds. Common Whitetails are
perchers, meaning they often rest on logs, rocks, low plant
stems, or even on the ground. Males are very
territorial,
guarding an edge of water 50 to 100 feet long. They are
constantly active, perching only a short time before
continuing to patrol their turf.


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Mark Moran
When one male sees
another, it shows off by raising its white abdomen above its
body while flying in the air. They will also bang into each
other while attempting to steal females. Mating only takes about
three seconds. After mating, a female will dip her abdomen
into the water's surface and lay up to 1000 eggs. Huntley Meadows
Park

Eggs hatch into aquatic nymphs, called naiads. Naiads live underwater, feeding on insects, small tadpoles, and other animals as they grow. Each time a naiad molts, it gets closer to being an adult. When the naiad is ready, it crawls out of the water on a plant stem and molts one last time. The adult dragonfly emerges.

Common Whitetails are active from early Spring until Fall. They eat huge amounts of insects, including mosquitoes, flies, and other flying insects. They even go after smaller dragonflies. Whitetails use their two front legs to grab prey in flight.
Predators of adult whitetails include birds, frogs, and other insect eaters. Fish, turtles, and other animals eat naiads.
Mark Moran
Common Whitetails are sometimes seen far from water, in gardens, fields, and roadsides.
Whitetails can tolerate low quality water better than most dragonfly species. This means you may still see them, even when water is polluted.
Mark Moran
Relationships in Nature:
Relationship to Humans:
Common Whitetails, and all dragonflies, are extremely helpful. They eat huge amounts of pesky insects, such as mosquitoes. They are also used by scientists to help determine how polluted water is. Since whitetails can tolerate poorer water than some other dragonflies, their presence helps us figure out just how polluted water may be.