Definition of Ephemeroptera in English:


plural noun

  • 1An order of insects that comprises the mayflies.

    • ‘We further included four representatives of the Zygoptera, one representative of the Epiophlebiidae, and one representative of the Ephemeroptera of the family Ephemeridae as outgroup taxa.’
    1. 1.1ephemeroptera Insects of the order "Ephemeroptera" ; mayflies.
      ‘various species of ephemeroptera’
      • ‘Stomach contents were examined with a dissecting microscope; [greater than] 99% of the enumerated prey were diptera larvae, ephemeroptera larvae, copepods, cladocera, and cyprinid fish.’
      • ‘There are more than 40 species of Ephemeroptera, or ‘upwinged flies,’ in the British Isles.’
      • ‘Every species of ephemeroptera may be distinguished by its genitalia.’
      • ‘The Ephemeroptera are among the most primitive of flying insects.’
      • ‘In 1994, zooplankton still dominated diets in August, whereas macroinvertebrates, mainly small chironomids and small Ephemeroptera, were dominant prey in August 1995 and 1996.’


Modern Latin (plural), from Ephemera (genus name) + pteron ‘wing’.