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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]
The development of general thrust is relatively small compared with lift forces. Lift forces may be more than three times the insect's weight, while thrust at even the highest speeds may be as low as 20% of the weight. This force is developed primarily through the less powerful upstroke of the flapping motion. [9] [16]
Meganeura is a genus of extinct insects from the Late Carboniferous (approximately 300 million years ago). It is a member of the extinct order Meganisoptera, which are closely related to and resemble dragonflies and damselflies (with dragonflies, damselflies and meganisopterans being part of the broader group Odonatoptera).
The Synthemistidae are the family of dragonflies commonly known as tigertails, or sometimes called southern emeralds. This family is part of the superfamily Libelluloidea. [2] [3] Synthemistidae is an ancient dragonfly family, with some species occurring in Australia and New Guinea. [4] Most species are small in size and have narrow abdomens.
It lacks wings, the eyes are smaller, the antennae longer, and the head is less mobile than in the adult. The mouthparts are modified, with the labium being adapted into a unique prehensile organ for grasping prey. Damselfly nymphs breathe through external gills on the abdomen, while dragonfly nymphs respire through an organ in their rectum. [2]
Dragonflies have thus come to exemplify spiritual awakening, enlightenment and clarity, particularly for Christians. But there's much more to unpack around the dragonfly's spiritual meaning ...
Here's what else to know about dragonflies on the lakefront, from how much longer they'll be around to new species in Wisconsin. Dragonflies are seen flying in Bayside on Monday, Aug. 29, 2022.
Meganisoptera is an extinct order of large dragonfly-like insects, informally known as griffenflies or (incorrectly) as giant dragonflies. The order was formerly named Protodonata , the "proto-Odonata", for their similar appearance and supposed relation to modern Odonata ( damselflies and dragonflies ).