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In most Odonata there is a structure on the leading edge near the tip of the wing called the pterostigma. This is a thickened, hemolymph –filled and often colorful area bounded by veins. The functions of the pterostigma are not fully known, but it most probably has an aerodynamic effect [ 4 ] and may also have a visual function.
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 ...
This dragonfly is found in and near a wide variety of slow-flowing and still-water habitats. These include streams, rivers, intermittent rivers, freshwater lakes, intermittent freshwater lakes, freshwater marshes, intermittent freshwater marshes, irrigation canals and ditches.
Dragonfly anatomy.svg; Language User Filename Image Tamil User:PJeganathan: Dragonfly anatomy Tamil-2.jpg ... current: 20:45, 1 February 2016: 1,000 × 666 (462 KB)
The dragonfly wants to inspire you to connect to the earth and with yourself in a more conscious and magical way." But dragonflies are not the only insects that act as messengers in your dreams!
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.
Wing of a dragonfly, showing the pterostigma Wings of a snakefly. The pterostigma (plural: pterostigmata) is a group of specialized cells in the outer wings of insects, which are often thickened or coloured, and thus stand out from other cells.
A demonic California dad has been arrested for allegedly beheading his 1-year-old son Friday in an early-morning frenzy of violence that also injured his wife and her mother, according to police.