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Dragonflies can be mistaken for the closely related damselflies, which make up the other odonatan infraorder and are similar in body plan, though usually lighter in build; however, the wings of most dragonflies are held flat and away from the body, while damselflies hold their wings folded at rest, along or above the abdomen. Dragonflies are ...
The common darter (Sympetrum striolatum) is a dragonfly of the family Libellulidae native to Eurasia.It is one of the most common dragonflies in Europe, occurring in a wide variety of water bodies, though with a preference for breeding in still water such as ponds and lakes.
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 ...
Drosophila melanogaster, the common fruit fly, has been used to study the effects of spaceflight on living organisms.. On a July 9, 1946, suborbital V-2 rocket flight, fruit flies became the first living and sentient [citation needed] [] organisms to go to space, and on February 20, 1947, fruit flies safely returned from a suborbital space flight, which paved the way for human exploration.
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]
Before reproduction can occur, a male must first establish a territory. These territories range from 2–4 metres (6.6–13.1 ft) in area and sit close to bodies of water. Male dragonflies patrol these areas and defend them from dragonflies of both their own and other species. Females initiate mating by flying into a male's territory.
Emperor dragonflies can also be recognised by their flight patterns: they often fly with their abdomen hanging slightly downwards. [ 2 ] [ 8 ] One of the largest species in Europe, the emperor dragonfly is exceeded by magnificent emperor , which occurs only marginally in the east Mediterranean [ 9 ] and in length by females of the golden-ringed ...
Insect winter ecology describes the overwinter survival strategies of insects, which are in many respects more similar to those of plants than to many other animals, such as mammals and birds. Unlike those animals, which can generate their own heat internally ( endothermic ), insects must rely on external sources to provide their heat ...