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Pictures | Wed Jun 20, 2012 | 11:25pm EDT

Mayflies mating

<p>Long-tailed mayflies fly over the surface of the Tisza river near Tiszainoka, southeast of Budapest, June 20, 2012. Millions of mayflies engage in a frantic rush to mate and reproduce before they perish in just a few hours from late spring to early summer every year.

REUTERS/Laszlo Balogh </p>

Long-tailed mayflies fly over the surface of the Tisza river near Tiszainoka, southeast of Budapest, June 20, 2012. Millions of mayflies engage in a frantic rush to mate and reproduce before they perish in just a few hours from late spring to early...more

Long-tailed mayflies fly over the surface of the Tisza river near Tiszainoka, southeast of Budapest, June 20, 2012. Millions of mayflies engage in a frantic rush to mate and reproduce before they perish in just a few hours from late spring to early summer every year. REUTERS/Laszlo Balogh

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<p>Long-tailed mayflies fly over the surface of the Tisza river near Tiszainoka, southeast of Budapest, June 20, 2012. REUTERS/Laszlo Balogh </p>

Long-tailed mayflies fly over the surface of the Tisza river near Tiszainoka, southeast of Budapest, June 20, 2012. REUTERS/Laszlo Balogh

Long-tailed mayflies fly over the surface of the Tisza river near Tiszainoka, southeast of Budapest, June 20, 2012. REUTERS/Laszlo Balogh

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<p>Long-tailed mayflies (Palingenia longicauda) mate on the surface of the Tisza river near Tiszainoka, southeast of Budapest, June 20, 2012.  REUTERS/Laszlo Balogh </p>

Long-tailed mayflies (Palingenia longicauda) mate on the surface of the Tisza river near Tiszainoka, southeast of Budapest, June 20, 2012. REUTERS/Laszlo Balogh

Long-tailed mayflies (Palingenia longicauda) mate on the surface of the Tisza river near Tiszainoka, southeast of Budapest, June 20, 2012. REUTERS/Laszlo Balogh

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<p>Long-tailed mayflies (Palingenia longicauda) mate on the surface of the Tisza river near Tiszainoka, southeast of Budapest, June 20, 2012. REUTERS/Laszlo Balogh </p>

Long-tailed mayflies (Palingenia longicauda) mate on the surface of the Tisza river near Tiszainoka, southeast of Budapest, June 20, 2012. REUTERS/Laszlo Balogh

Long-tailed mayflies (Palingenia longicauda) mate on the surface of the Tisza river near Tiszainoka, southeast of Budapest, June 20, 2012. REUTERS/Laszlo Balogh

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<p>Long-tailed mayflies (Palingenia longicauda) lands on a boat at the Tisza river near Tiszainoka, southeast of Budapest, June 20, 2012. REUTERS/Laszlo Balogh </p>

Long-tailed mayflies (Palingenia longicauda) lands on a boat at the Tisza river near Tiszainoka, southeast of Budapest, June 20, 2012. REUTERS/Laszlo Balogh

Long-tailed mayflies (Palingenia longicauda) lands on a boat at the Tisza river near Tiszainoka, southeast of Budapest, June 20, 2012. REUTERS/Laszlo Balogh

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<p>A man holds a long-tailed mayfly (Palingenia longicauda) at Tisza river near Tiszainoka, southeast of Budapest, June 20, 2012. REUTERS/Laszlo Balogh </p>

A man holds a long-tailed mayfly (Palingenia longicauda) at Tisza river near Tiszainoka, southeast of Budapest, June 20, 2012. REUTERS/Laszlo Balogh

A man holds a long-tailed mayfly (Palingenia longicauda) at Tisza river near Tiszainoka, southeast of Budapest, June 20, 2012. REUTERS/Laszlo Balogh

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<p>Long-tailed mayflies (Palingenia longicauda) mate on the surface of the Tisza river near Tiszainoka, southeast of Budapest, June 20, 2012. 
REUTERS/Laszlo Balogh </p>

Long-tailed mayflies (Palingenia longicauda) mate on the surface of the Tisza river near Tiszainoka, southeast of Budapest, June 20, 2012. REUTERS/Laszlo Balogh

Long-tailed mayflies (Palingenia longicauda) mate on the surface of the Tisza river near Tiszainoka, southeast of Budapest, June 20, 2012. REUTERS/Laszlo Balogh

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<p>Long-tailed mayflies mate on the surface of the Tisza river near Tiszainoka, southeast of Budapest, June 20, 2012. REUTERS/Laszlo Balogh </p>

Long-tailed mayflies mate on the surface of the Tisza river near Tiszainoka, southeast of Budapest, June 20, 2012. REUTERS/Laszlo Balogh

Long-tailed mayflies mate on the surface of the Tisza river near Tiszainoka, southeast of Budapest, June 20, 2012. REUTERS/Laszlo Balogh

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