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Related to Ephemeroptera: Diptera, May fly, Trichoptera, shadfly


(invertebrate zoology)
The mayflies, an order of exopterygote insects in the subclass Pterygota.



(mayflies), an order of winged insects having two similar winged phases, the subimago and imago, which are separated by a molt. During these phases, which have a duration ranging from several seconds to several days, the insects do not feed. Some species live for only one day.

The mouthparts are vestigial, and the alimentary canal has been transformed into an air bladder. The forewings have a rich network of venation and are larger than the hind wings. Sometimes hind wings are absent. The tip of the abdomen has three segmented filaments—a pair of long, lateral cerci and one median paracercus, which is sometimes much shorter than the other two.

The mayfly undergoes incomplete metamorphosis. It has a large number of larval stages (as many as 25), and development takes place in the water for one to three years.

There are 23 widely distributed families, embracing more than 2,000 species. The USSR has 17 families, with more than 200 species. Mayflies all inhabit freshwaters, but they represent various ecological groups and have adapted to various living conditions (undergrowth, mud, rapids, soil). The larvae are food for many valuable commercial fishes, including salmon and white-fish. Ephemeropteran fossils are important in stratigraphy.


Opredelitel’ nasekomykh Evropeiskoi chasti SSSR, vol. 1, pages 110–36. Edited by G. Ia. Bei-Bienko. Moscow-Leningrad, 1964.


References in periodicals archive ?
2 Dip2 Ephemeroptera Baetidae Andesiops And Baetodes Bae Camelobaetidius Cam Mayobaetis May Nanomis Nan Paracloeodes Par Prebaetodes Pre Varipes Var Leptohyphidae Haplohyphes Hap Leptohyphes Lep Tricorythodes Tes Leptophlebiidae Farrodes Far Thraulodes Thr Oligoneuriidae Lachlania Lac Ephemeroptera sp.
De igual manera que Ephemeroptera y Plecoptera, Trichoptera forma parte de los grupos de la entomofauna de amplia utilizacion como bioindicadores de la calidad del agua y en diferente tipo de estudios taxonomicos y ecologicos en Colombia [3, 41].
Al respecto, Zamudio et al (9) y Mojica-Corzo et al (10) destacan para S dariensis el consumo de insectos acuaticos de los ordenes Diptera, Trichoptera, Ephemeroptera y Plecoptera que se adhieren a la superficie de las rocas, los cuales capturan con ayuda de sus dientes superiores.
5), and the relative abundance of Ephemeroptera were significantly higher in the control sites (48.
The secondary preys of the hybrid were mud, Ephemeroptera, fish, Coleoptera, sand, animal debris and zooplankton.
Highest level of LDO and lowest level of TDS at RA indicated clear oxygenated water which explained the presence of the very sensitive ephemeroptera.
Los ordenes de macroinvertebrados acuaticos registrados en el riachuelo fueron Trichoptera, dominado por Leptoceridae, Hydropsychidae y Phylopotamidae, Plecoptera (Perlidae), Coleoptera (Elmidae), Ephemeroptera (Baetidae), Diptera (Tipulidae), Dyctioptera (Blaberidae) y Decapoda (Pseudothelphusidae).
A diferencia, el indice EPT calcula la calidad de agua con base en la riqueza de Ephemeroptera, Plecoptera y Trichoptera, lo que hace que este indice sea util en la deteccion de perturbaciones mas sutiles, asi como evidenciado por otros autores (ALVAREZ & PEREZ, 2007, BARRIONUEVO et al.
Ephemeroptera recorded their complete absence at St III and IV while comparatively more density of ephemeropterans at St I (4.
Lightly hackled blue quills and gray midges, as well as emerger flies in sizes 18-20, are fooling fish feeding on paraleptophlebia and other tiny ephemeroptera.