Richard Fieldhouse and Rebecca Taylor of the British firm Barbless Flies Limited published an article on fishing the different stages of the Mayfly lifecycle on their website recently:

Ever wondered why Mayflies are considered as one of the most valuable species in the world of fly fishing? The Ephemera danica, commonly known as the Mayfly, are one of the most eagerly anticipated up-winged flies a fly angler encounters on the river. Being one of the most important foods for trout due to their nutritional factor, Mayflies play a very important role during the trout fishing season.
Mayflies generally hatch from mid May, lasting until the middle to end of June. They generally only live for one day, but do you know how to fish them during their short lifespan? If you want to increase your chances of some great trout catches, read on how to conveniently imitate these marvellous flies.

Read the full article here:
https://www.barbless-flies.co.uk/blogs/2wheels1rod/fly-fishing-the-mayfly-lifecycle

Barbless Flies Limited
35 Mill Way
Scalby, North Yorkshire YO13 0BG
United Kingdom