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 ?
Dominique's Mayfly flits fairy-like across the stage with graceful, balletic movements in a pink tutu skirt that lights up, turquoise wings, stripy coloured socks and metallic Docs.
Heading the cast, as the mayfly, is TV favourite Dominique Jackson (pictured), best known for playing teenager Lauren Valentine in Hollyoaks, and Becky in Becky and Barnaby Bear.
An adult mayfly can live for any period of time between 30 minutes to one day.
THERE was only the odd mayfly hatch on Lough Conn in Co Mayo during the Spring International Fly Fishing Championship.
Although Mayfly is the common name of ephemeroptera, chaoboridae and chironomidae are referred to as mayflies by the villagers simply because of their spectacular characteristic month of May emergence.
But since the demise of the DTI and the mayfly that was BERR, things have been a little quieter.
William's work was published in the SQA collection Write Times and in the anthology New Writing Scotland, American literary publication Mayfly and Poetry Scotland.
To examine this, we compared the emergence rates of flat headed mayfly larvae (Stenacron interpunctatum) in various concentrations of atrazine, to an acetone control.
Then, you wander down to Beaverhead River for mayfly, yellowsally and some caddis hatches you've just never seen before.