Cloeon dipterum
Length: 5 to 7 mm; wingspan: 13 to 25mm. A reddish brown mayfly. The compound eyes of C. dipterum show a striking sexual dimorphism, whereby females have lateral apposition eyes, while the males' eyes have additional dorsal "turban-shaped" parts that function as superposition eyes. These extra eyes are thought to enable the males to locate isolated females in the mating swarm.
Around ponds and favouring small ponds.
May to October
The larvae feed on algae and detritus in ponds, the adults do not feed at all.
A common and widespread species in Britain
Common in Leicestershire and Rutland.
Graham CalowSapcote garden128 August 2014female
Graham CalowSapcote garden121 July 2015specimen examined
David NichollsWatermead01 May 2015
David NichollsWatermead Country Park01 May 2015male
Graham CalowSapcote garden128 July 2013
Graham CalowSapcote garden105 September 2016female
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David NichollsEllis Meadows31 August 2018
Graham CalowSapcote garden108 August 2014female Harecroft Crescent Sapcote SP49019371 (taken 16.8.2010).JPG)
Graham CalowSapcote garden116 August 2010
HAPeacockLeicester Garden14 July 2013female
Graham CalowSapcote garden105 June 2013
Graham CalowSapcote garden128 August 2014female
David NichollsWatermead Country Park01 May 2015
Graham CalowSapcote garden128 July 2013
Graham CalowSapcote garden128 July 2013
HAPeacockLeicester Garden14 July 2013female
David NichollsWatermead Country Park01 May 2015
Graham CalowSapcote03 April 2012larva - specimen examined
Graham CalowSapcote garden121 July 2015specimen examined
Graham CalowSapcote garden105 September 2016female
Graham CalowSapcote garden104 July 2016female sub imago
 Harecroft Crescent Sapcote SP49019371 (taken 16.8.2010).JPG)
