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 aquatic larvae develop.
- Order Ephemeroptera: several families.
- 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 made to resemble a mayfly.
- 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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