page_title: Mayfly
hierarchical_section_title: Mayfly
context_page_description: Mayflies are insects which belong to the Order Ephemeroptera. The name refers to the most distinctive features of the adults. They are in an ancient group of insects, the Palaeoptera, with dragonflies and damselflies.
  There are over 3,000 living species of mayfly, in over 400 genera in 42 families.
context_section_description: Mayflies are insects which belong to the Order Ephemeroptera (from the Greek ephemeros = ephemeral, or short-lived; pteron = wing). The name refers to the most distinctive features of the adults. They are in an ancient group of insects, the Palaeoptera, ('Ancient wings') with dragonflies and damselflies.
  There are over 3,000 living species of mayfly, in over 400 genera in 42 families.
caption: Ephemera danica, Belgium
  
  by Luc Viatour.
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