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An eastern pondhawk in the Mallows Bay–Potomac River National Marine Sanctuary.. Nymphs of the eastern pondhawk are identifiable by their green eyes. When they leave the water and moult for the final time, the emerging immature adult is dull olive green but over the course of a few hours, the abdomen becomes bright green, there is dark brown banding and the heads take on a metallic green sheen.
Odonata is an order of predatory flying insects that includes the dragonflies and damselflies (as well as the Epiophlebia damsel-dragonflies). The two major groups are distinguished with dragonflies (Anisoptera) usually being bulkier with large compound eyes together and wings spread up or out at rest, while damselflies (suborder Zygoptera) are usually more slender with eyes placed apart and ...
Dragonflies having simple flaps shed the eggs in water, mostly in flight. Dragonflies having ovipositors use them to puncture soft tissues of plants and place the eggs singly in each puncture they make. [32] [34] [35] [36] Dragonfly nymphs vary in form with species, and are loosely classed into claspers, sprawlers, hiders, and burrowers. [17]
They squirt water out from the ends of their abdomens. They will generally take several years to mature, and when the immature changes into a dragonfly, it does so at night. This behavior probably was evolved to avoid being eaten be daytime predators. The adult generally flies from late April to November, and does all of its hunting while on ...
An immature flame skimmer feeds mainly on aquatic insects. Its diet consists of mosquito larvae, aquatic fly larvae, mayfly larvae, freshwater shrimp , small fish, and tadpoles. The nymphs, which live in the mud at the bottom of warm streams or ponds, catch their prey by waiting patiently for it to pass by.
The green darner or common green darner [5] (Anax junius), after its resemblance to a darning needle, is a species of dragonfly in the family Aeshnidae.One of the most common and abundant species throughout North America, it also ranges south to Panama. [6]
Libellula quadrimaculata, known in Europe as the four-spotted chaser and in North America as the four-spotted skimmer, is a dragonfly of the family Libellulidae found widely throughout Europe, Asia, and North America.
The common whitetail or long-tailed skimmer (Plathemis lydia) is a common dragonfly across much of North America, with a striking and unusual appearance.The male's chunky white body (about 5 cm or 2 inches long), combined with the brownish-black bands on its otherwise translucent wings, give it a checkered look.