Organisms

Ephemeroptera

An Order of aquatic INSECTS comprising about 2,500 species worldwide. It is the only insect group with two flying stages, each with relatively large forewings. The immature stage called naiad or nymph lasts one year in fresh water, and the adult stage is shortlived, lasting from a few minutes to a few days, depending on the species. The Ephemeroptera includes mayflies (also called shadflies)

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

An Order of aquatic INSECTS comprising about 2,500 species worldwide. It is the only insect group with two flying stages, each with relatively large forewings. The immature stage called naiad or nymph lasts one year in fresh water, and the adult stage is shortlived, lasting from a few minutes to a few days, depending on the species. The Ephemeroptera includes mayflies (also called shadflies)

MeSH Record

Classification

Broader headings

Related Concepts

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MeSH Record

Synonyms

2 entry terms
  • Mayflies
  • Mayfly

MeSH Record

Aspects Covered

18 allowable subheadings

Indexed with the subheadings anatomy & histology, chemistry, classification, cytology, drug effects, embryology, enzymology, genetics, growth & development, immunology, metabolism, microbiology, parasitology, pathogenicity, physiology, radiation effects, ultrastructure, virology.

MeSH Record

Indexing Annotation

for killing Ephemeroptera with insecticides, see note at INSECTICIDES

MeSH Record

History Note

2015

MeSH Record

Previous Indexing

  • Insects (1963-2014)

MeSH Hierarchy

Tree Number

AMA Style

References

  1. National Library of Medicine. Ephemeroptera. Medical Subject Headings (MeSH). 2026. Unique ID D065133. http://id.nlm.nih.gov/mesh/2026/D065133
  2. Ephemeroptera. In: Wikipedia. https://en.wikipedia.org/wiki/Mayfly
  3. Ephemeroptera. In: Wikidata. https://www.wikidata.org/wiki/Q174273