C and NE Europe; also large part of Ireland. Also Turkey and Russia through the continent to China and Kamchatka, included. In Denmark mainly C Jylland but also populations on Fyn, Sjælland and Bornholm.
Habitat:
Behavior:
Status:
LC(global) LC(eu) LC(dk). Stable in Denmark. Billqvist 2023 has it as VU in Europe.
Imago ♂
South side of water holes along Herredsfogedvej.
A single male seen along the path along the bank. Interesting if the stepwise incrementation of the blue on the segments, from the tail to the head, is a specific character for the species. I think the blue upperside and the green underside is!
Imago ♀
South side of water holes along Herredsfogedvej.
This animal became a lifer. However, in the field I just saw the glittering dark upperside to the abdomen and took it for a Large Redeye. Though a good distance away from the water, this would probably have been unusual. Checking the photos back home, it became clear that it was indeed a Crescent. Found on the trail along the ridge south of the lakes.
Imago ♀
A traditional female, but compare it with this female cyathigerum [Almindelig Vandnymfe] seen at the same locality, and understand that the finer details are often crucial to see when putting an id on these animals.
See how the S8 shows the typical pattern, the abdomen is mainly black, the eyespots more round. The pale shoulder stripe, however, is only slightly narrower than on the cyathigerum, though the black line below it is definitely broader - as it should be.
Imago ♂
Hue-vandhullet.
A nice little mix of species where armatum [Hue-vandnymfe] was the target. Also an ever-charismatic nymphula [Rød Vandnymfe].
Imago ♀
The patterns on S2 and S8 are typical for the female of this species. The pyramid shaped pale spot along the rear edge of the pronotum is also a good hint toward this species, as well as large elongated eyespots connected by a fine line.