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Alderfly

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Alderfly
Temporal range:Toarcian–Recent
AdultSialis lutaria
Scientific classificationEdit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Megaloptera
Family: Sialidae
Leach,1815
Subfamilies

See text

Alderfliesaremegalopteraninsectsof thefamilySialidae.They are closely related to thedobsonfliesandfishfliesas well as to theprehistoricEuchauliodidae.All living alderflies – about 66speciesall together[1]– are part of thesubfamilySialinae,which contains nine extantgenera.[2]

Description

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Sialinae have a body length of less than 25 mm (1 inch), long filamentousantennae,and four large darkwingsof which theanteriorpair is slightly longer than the posterior. They lackocelliand their fourthtarsalsegment is dilated and deeply bilobed. Dead alderfly larvae are used as bait in fishing.[3]

Life cycle

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The females lay a vast number of eggs on grass stems near water. When the larvae are born they drop into the water or the ground nearby it and make their way into their new aquatic biome. Thelarvaeare aquatic, active, armed with strong sharp mandibles, and breathe by means of seven pairs of abdominalbranchialfilaments. When full sized, which takes between one and two years, they leave the water and spend a quiescentpupalstage on the land beforemetamorphosisinto the sexually mature insect. Adult alderflies stay near to the water in which they had lived when they were younger. Once in their adult stage, they tend to live only 2 to 3 weeks, which they spend mainly in reproducing.

Classification

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In addition to the nine living genera,[2]there are several genera offossilalderflies.[4]

Sialis lutarialarva
Larva

FamilySialidae

Sialis lutariais the commonest alderfly in theUnited Kingdom[5]and across much of Europe.

References

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  1. ^Engel, M.S.; Grimaldi D.A. (2007)."The neuropterid fauna of Dominican and Mexican amber (Neuropterida, Megaloptera, Neuroptera)".American Museum Novitates(3587): 1–58.doi:10.1206/0003-0082(2007)3587[1:TNFODA]2.0.CO;2.hdl:2246/5880.
  2. ^abMartins, Caleb C.; Ardila-Camacho, Adrian; Rivera-Gasperín, Sara Lariza; Oswald, John D.; Liu, Xingyue; Contreras-Ramos, Atilano (2022-04-08)."A world checklist of extant and extinct species of Megaloptera (Insecta: Neuropterida)".European Journal of Taxonomy.812:1–93.doi:10.5852/ejt.2022.812.1727.ISSN2118-9773.
  3. ^fly fishing entomology alderfy entry
  4. ^Liu, Xingyue; Hayashi, Fumio; Yang, Ding (2014-02-07)."Phylogeny of the family Sialidae (Insecta: Megaloptera) inferred from morphological data, with implications for generic classification and historical biogeography".Cladistics.31(1): 18–49.doi:10.1111/cla.12071.ISSN0748-3007.
  5. ^Arkive(2006):Alderfly -Sialis lutaria.Retrieved 28 June 2006.
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