
Cloeon dipterum subimago exuviae - Common wetland mayfly
Female subimago moulting to imago. I am glad I managed to phorograph this stage, as mayflies are the only insects where a winged form undergoes a further moult. The photos are taken in October in our apartment in Sofia, one evening using a flash. On the other photo the focus is on the imago.

Cloeon simile is a Mayfly (Ephemeroptera) in the family Baetidae. It is closely related to Cloeon dipterum, which is by some considered to be a species complex, hiding more than one actual species.
Similar species: Mayflies
By Jivko Nakev
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Uploaded Jan 5, 2018. Captured Oct 21, 2017 13:14 in ul. "Vorino" 20А, 1612 ж.к. Белите брези, Sofia, Bulgaria.