mayfly

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mayfly,

any insectinsect,
invertebrate animal of the class Insecta of the phylum Arthropoda. Like other arthropods, an insect has a hard outer covering, or exoskeleton, a segmented body, and jointed legs. Adult insects typically have wings and are the only flying invertebrates.
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 of the order Ephemeroptera, so named because the adults live for a short time, often only a single day, during which they molt twice, mate, and lay their eggs in freshwater. The adults are medium to large, shiny, slender insects with two pairs of fragile, transparent, many-veined wings, and two or three long threadlike tails. The long forelegs of the male are used to clasp the female during the mating flight. Mayflies, also called June bugs, shad flies, and salmon flies, emerge by the thousands from streams, ponds, and lakes at twilight in the early spring; the males form large mating swarms and when a female flies into the swarm she is seized by a male and the two depart to mate. Mayflies lack fully developed mouthparts and do not feed. The insect undergoes incomplete metamorphosismetamorphosis
[Gr.,=transformation], in zoology, term used to describe a form of development from egg to adult in which there is a series of distinct stages. Many insects, amphibians, mollusks, crustaceans, and fishes undergo metamorphosis, which may involve a change in habitat,
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, the egg hatching directly into an aquatic naiad, or nymph, with chewing mouthparts, which passes through some 20 nymphal stages over a period of two years or more, feeding on algae and diatoms and breathing oxygen taken directly from water by gills. It emerges from the water to transform into a subadult phase known as the subimago, unique among insects, in which it has wings and can fly but has immature legs, tail, and reproductive system. Adult mayflies are an important food source for many animals; several fishing flies are modeled after them. Mayflies are classified in the phylum ArthropodaArthropoda
[Gr.,=jointed feet], largest and most diverse animal phylum. The arthropods include crustaceans, insects, centipedes, millipedes, spiders, scorpions, and the extinct trilobites.
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, class Insecta, order Ephemeroptera.

mayfly

[′mā‚flī]
(invertebrate zoology)
The common name for insects composing the order Ephemeroptera.

mayfly

1. any insect of the order Ephemeroptera (or Ephemerida). The short-lived adults, found near water, have long tail appendages and large transparent wings; the larvae are aquatic
2. Angling an artificial fly resembling this
References in periodicals archive ?
Canadian soldier Tom Johnson writing to Lulu Croft, December 12, 1917
The Canadian soldiers operated under the same standards as their U.
The general said that while Canadian soldiers are not participating in active combat, they have the right to fire back if fired upon.
On Sunday police said Michael Zehaf-Bibeau, the man who killed a Canadian soldier and attacked the Parliament building made a video of himself just before the attack, evidence that he was driven by ideological and political motives.
Summary: A Canadian soldier standing guard at a war memorial in the country's capital was shot dead Wednesday, and heavy gunfire then erupted inside parliament.
A CANADIAN soldier standing guard at a war memorial in the country's capital was shot dead, and gunfire then erupted inside Parliament, authorities said.
The fatal shooting of a Canadian soldier at that nation's National War Monument yesterday, and a subsequent gun battle inside the nearby Parliament building that left a gunman dead, are stark reminders of the fluid and unpredictable nature of the conflict.
With popular support for the war sapped at home, most of the nearly 3,000 Canadian soldiers, based mainly in the dangerous battleground of Kandahar, have packed up and gone home.
Five Canadian soldiers who lost their lives are buried at Edgerton Cemetery and have become a focus for the school's annual remembrance service.
Canadian soldiers cannot legally participate in operations that they believe will lead to the torture of prisoners.
And four Canadian soldiers and a journalist Michelle Lang, 34, were killed in a roadside bomb in Kandahar province.
And four Canadian soldiers and a journalist in their unit were killed by a roadside bomb in Afghanistan's south.

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