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3 august 2010, The Netherlands, Reestdal

In vegetation near stream, 6,3 mm long
It is a male - in females the eyes are more normal.

In Baetis i pictured a male with pillow shaped upper eyes,
but the eyes in this species are quit weird also...
I wonder which species this is


Klaas

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a closer view to the head

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male´s eyes, not that strange I´ve no idea, i "feel" Baetis is more probable than Centroptilum but I can´t tell, in case it is Baetis the colour of the eyes seems next to B. fuscatus more than to B. rhodani
- it should have 2 tails (not 3)
- it should have (though maybe very reduced) a 2nd pair of wings
There´s a nice and cheap book from "naturalist´s handbooks", Nr 13, (Harker, J.) but i don´t know if it will be good for Nederlands, theres a better guide now for all Europe, but not that cheap. Good luck

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Yes, second pair of wing very reduced till about 0,5 mm and probable two tailed, but it lacks one.
And thanks for the rest of your info

Klaas

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Cloeon dipterum male imago