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Possible to speculate which Meromyza this might be? Found among sand dunes at St Cyrus National Nature Reserve in southern Aberdeenshire in July 2020.

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2

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And the final duo...

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Congratulations for those phantastic pictures!
Greetings Kuv

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Chloropidae, Chloropinae: Meromyza pratorum Meigen, 1830: This is the largest European Meromyza species (partly longer than 8mm) and one of the few easily to be identified with its long abdomen ending far beyond the hind femora and its frons produced in front as long as half the diameter of the eye. A fine and well agreeing short description is available in Nartshuk & Andersson 2013 (Fauna ent. scand. 23: 213). It is the most abundant Meromyza in our European dunes where it develops in Ammophila arenaria, one of its preferred hosts in Poaceae. Green Meromyza spp. turn yellow after their death. The metallic sheen of their eyes disappears, as the water evaporated between certain submicroscopic cell layers within their eyes, being responsible for the interference colours with about 500nm wave lengths. Along the coastal dunes around Iceland [3 months collecting] and at the Pacific coast of Kamchatka on Ammophila and Leymus arenarius stands I searched this species in vain.

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Thanks once again for the ID Michael, very much appreciated. Now, IF you could give an opinion on this Cetema sp;
https://diptera.i..._id=101862

And thanks for the [very well deserved] compliment on the photos Kuv , obviously a person of taste . More Fantastic photos here ...

https://www.flick...nken_u_47/

Regards

Roger.

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... and don't forget the Link to https://diptera.i..._id=108362!
Greetings Kuv