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Ephemeroptera, also known as mayflies or up-wing flies, can be seen emerging from the water, resting on nearby vegetation and most commonly 'dancing' above head height, along the shores of many still waters and rivers. This guide provides introductory, picture-based keys and species accounts for both the adults and nymphs of the 51 species recorded in the British Isles.
Please note: This guide contains several blank pages for rare species where the author was not able to obtain photographs. This is not a misprint. It is hoped these can be filled in in the future.
![Die Eintagsfliegen Zentraleuropas (Insecta:Ephemeroptera): Bestimmung und Okologie [The Mayflies of Central Europe (Insecta: Ephemeroptera): Identification and Ecology]](http://mediacdn.nhbs.com/jackets/jackets_resizer_medium/17/178311.jpg?height=150&width=104)
