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 ?
Fly fishermen need good imitations of all the various colors and sizes of the different species of mayflies to be successful consistently when trout are feeding selectively.
On that day there was not a single fisher in sight and much to my amazement not a single fish stirred to feed on the millions of mayflies despite the lake holding fourteen different breeds of fish.
When I was growing up, there were only mayflies in Vermont and New Hampshire.
HIGHAM LAKES 01661 860032 / NE20 0DH Anglers did well with dries this week; Mayflies, Hawthorns, and Black Spider were the top patterns.
MILWAUKEE -- Mayflies have begun emerging from the Mississippi River in swarms that show up on radar like thunderstorms, coat roads and leave behind slimy messes.
And in Wisconsin he watches millions of mayflies emerge as adults with just 24 hours to find a mate.
Phoresy in adult mayflies has never before been recorded.
Bauernfeind (zoology, The Natural History Museum of Vienna) and Soldan (ecology of aquatic insects, Academy of Sciences, Czech Republic) present an overview of the present state of research on mayflies described or recorded from Europe in as unbiased a manner as their own personal views allow.
Worried about Graham's hasty nuptials to his green card bride, he bleated: "There are mayflies that have courted longer.
Along with the Venice Biennale, the joy of the temporary underpins this issue, with Carmody Groarke's restaurant (page 50) and Studio Anne Holtrop's gallery (page 76), a pair of architectural mayflies that embody the ebullient spirit of summer and the increasing impermanence of our times.
Shauna Roberts's new novel, Like Mayflies in a Stream, is an imaginative elaboration on the Epic of Gilgamesh.