Mayfly nymph
Mayfly adult |
How to make the ID: three tails, but sometimes has two tails. Tails are never paddle or fan like. Adult has two pair of long, lacy wings, two tails. Its Color: green, gray, brown, but usually black. How it reproduces: female lays eggs on top of water and they drift to the bottom; some species crawl under water and attach eggs to submerged objects. Metamorphosis: Incomplete It is food for: fish, are an important part of the food chain. Its food: algae, diatoms, and plankton. Indicator: Sometimes they are tolerant to pollution, but are usually found in cleaner water. Length: up to 1 inch. |
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Pictures and information from EPA Biological Indicators of Watershed Health are used with permission from Mr. Wayne Davis. |