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Available for over a year

The mayfly is a butterfly-sized insect which hatches in the lakes of Western Ireland during early summer. As Diarmaid Fleming explains, the swarms make a favoured meal for brown trout - and that means a minor stampede of keen anglers hoping to reel in some delicious fish. In County Galway, the mayfly's habits and appearance are the stuff of local gossip and great excitement. Photo: a mayfly of the order Ephemeroptera (c) 91������