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True flies are insects of the order Diptera. The name is derived from the Greek di-= two, and ptera = wings. Most insects of this order have two wings (not counting the halteres, club-like limbs which are homologous to the second pair of wings found on insects of other orders). Wingless flies are found on some islands and other isolated places.
Insects are the only group of invertebrates that have evolved wings and flight. Insects first flew in the Carboniferous, some 300 to 350 million years ago, making them the first animals to evolve flight. Wings may have evolved from appendages on the sides of existing limbs, which already had nerves, joints, and muscles used for other purposes.
In the class Insecta (insects), in the infraorder Anisoptera (dragonflies), [1] genus Hemaris (bee hawk-moths) [a] [2] and order Diptera (true flies), species with this ability can be also found. [3] There are also some species that don't use the traditional wing flapping mechanism to fly backwards.
Cabin crew and ground staff tried to get the situation under control by spraying mosquito and insect repellent in the cabins. It eventually took off at 6:59 p.m., according to the flight's history .
Adult males never eat, and leave the home colony almost immediately to find a female and mate. Those males that cannot fly often mate with females in nearby colonies, meaning their chosen mates are often siblings or close relatives. In some species, the female eats the male after mating, but in any event, the male does not survive for long.
The fly pupates in the detached head capsule, requiring a further two weeks before emerging. Various species of Phoridae have been introduced throughout the southeast United States, starting with Travis , Brazos , and Dallas Counties in Texas , as well as Mobile, Alabama , where the non-native fire ants first entered North America.
The insect order Zoraptera, commonly known as angel insects, contains small and soft bodied insects with two forms: winged with wings sheddable as in termites, dark and with eyes (compound) and ocelli (simple); or wingless, pale and without eyes or ocelli. They have a characteristic nine-segmented beaded (moniliform) antenna.
These genetic mutations may have different results such as the development of muscles that cannot support flight or even result in the lack of wings entirely. [2] Flightless fly models have been especially useful for the study of human neuromuscular diseases such as spinal muscular atrophy , spinobulbar muscular atrophy , myotonic dystrophy ...