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A dragonfly is a flying insect belonging to the infraorder ... which make up the other odonatan ... and they have been known to aggregate close to polished ...
The adults of Onychogomphus forcipatus grow up to 6 centimetres (2.4 in) long, with a wingspan of 5.5–7.5 centimetres (2.2–3.0 in). The eyes of these medium-sized dragonflies are widely separated and grey-to-green.
Mating takes place while the dragonflies are perched on vegetation close to the water. [2] Within one minute of mating, the female starts to lay her eggs, the male hovering nearby to guard her. [4] She flies low over the pond, dipping her abdomen into the water and depositing her eggs at intervals. [2] Some females mate several times during a ...
Close-up of head and thorax of a male. Aeshna cyanea can reach a body length of about 70 millimetres (2.8 in), [5] with a wingspan up to 110 millimetres (4.3 in). [6] It is a large, brightly coloured dragonfly, with a long body. The thorax is brown, with two ante-humeral wide green longitudinal stripes.
More mass at the end of the wing may also reduce the energy needed to move the wings up and down. The right combination of wing stiffness and wing mass could reduce the energy consumption of flying. There are five main vein stems on dragonfly and damselfly wings, and wing veins are fused at their bases. The main veins are:
It is a species of skimmer belonging to Libellulidae, one of the largest dragonfly families in the world. Along with Brachymesia gravida and B. herbida , two closely related species within the same genus, B. furcata is often found in semi-aquatic habitats distributed throughout the Caribbean, the Americas, Argentina, West India, Mexico, and ...
Australian emperor laying eggs, guarded by the male in tandem position. The Australian emperor is notable as the dragonfly in which motion camouflage was studied by Mizutani et al.: males of Anax papuensis are fiercely territorial, and approach and attack rivals, the males choose a flight path that keeps their image as seen by the target still with respect to a landmark point.
Somatochlora sahlbergi, the treeline emerald, is a species of dragonfly in the family Corduliidae. It is found at high latitudes across northern Eurasia and North America, and occurs farther north than any other dragonfly.