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Unidentified Ephemeroptera


Unidentified Ephemeroptera - Mayfly. In trying to identify this one, I have had to settle for the Order. According to Wikipedia, there are over 400 genera in 42 families and more than 3,000 species and very little online information available. So if, like me, you are trying to identify one, "Good luck with that !" I only knew that this was a Mayfly because of two characteristics. Firstly it closes its wings together above its body when at rest (like a butterfly) and secondly, it has exceedingly long tails.


This Mayfly was spotted sitting on the leaf of a Mongo Bean plant (Vigna radiata). In order to give one of the rice fields a rest, it was planted with Mongo instead of rice. The leaf however, has little significance for a Mayfly's habitat. The single most important factor that supports mayfly life is fresh water. There is a small river about 50 meters from the field where I spotted this one. So I assume there is a connection. In the dry season, the river dwindles to a trickle, but at the time of this spotting, at the peak of the rains, it becomes a torrent, with flooding over its banks and little pools everywhere around.


In case you are wondering about the pictures, the first two are cropped to get a decent view of the body. The last picture is cropped unusually to allow for the inclusion of the very long tails which you will see if you zoom in. Finally, I think this is a female because its front legs are hard to spot, being rather short. Wikipedia says that males have extra long front legs

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John B.
Spotted by
John B.

Palauig, Central Luzon, Philippines

Spotted on Aug 30, 2016
Submitted on Jun 6, 2022

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