by Dean HodsonThe Mayfly belongs to one of the oldest orders of insects… the Ephemeroptera with an evolutionary history dating back around 300 million years to the late carboniferous period.There are around 50 species of Ephemeroptera in the UK and over 2000 worldwide and “Mayfly†is a common generic term often used to describe any of these up-winged fliesThis clip is taken from The Complete Mayfly
