Pond Olive

Cloeon dipterum


Body length 6 - 10mm. The 'spinner' is apricot coloured. This moults to become the sexually mature 'dun', which is duller, and more olive. There are 51 species of Mayfly in Britain, some of which are very similar and need microscopic examination to determine their species.


Small ponds and ditches.

Best time to see

May to September.