Definition of mayfly in English:

mayfly

Syllabification: may·fly
Pronunciation: /ˈmāˌflī
 
/

noun (plural mayflies)

1A short-lived, slender insect with delicate, transparent wings and two or three long filaments on the tail. It lives close to water, where the chiefly herbivorous aquatic larvae develop.
  • Order Ephemeroptera: several families and many species
More example sentences
  • Rations include a variety of insect larvae, especially mayflies, blackflies, caddis flies, and midges.
  • During the breeding season, they also eat insects, especially dragonflies, mayflies, and caddis flies as they emerge from their aquatic larval stage.
  • In rivers rainbow trout will feed primarily upon the larvae of mayflies and caddis flies.
1.1An artificial fishing fly that imitates a mayfly.
More example sentences
  • Dapping natural and artificial mayflies also worked well.
  • Mayfly hatches appeared to be sparse but trout were still taking artificial mayflies.
  • I could clearly see my size 10 mayfly nymph as it proceeded downstream, bumping and lifting off the bottom.

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