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another Choerades - difficult again...
#1 Print Post
Posted on 08-07-2014 00:03
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Location: Berlin and Baden-Württemberg, Germany
Posts: 3890
Joined: 28.07.07

Today I saw some Choerades flies on the eastern outskirts of Berlin. I suppose I found male and female. They seem to differ from my Ch. fimbriata in in that the facial hairs are white and the scutellar bristles dark. The anepisternum is greyish-tomentose, and I do not see yellow hairs. The first antennal segment is rather long. The key leads to Ch. femorata, but can the tergites be so golden-haired? Even in the male there is a golden gleam below the wings viewed from above. So I need an expert's opinion - thanks for any help!

This is the female, eating a Mirid bug, probably Megaloceroea recticornis. Unfortunately I got only this view.
Sundew attached the following image:

#2 Print Post
Posted on 08-07-2014 00:04
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Location: Berlin and Baden-Württemberg, Germany
Posts: 3890
Joined: 28.07.07

This should be its male (or not?).
Sundew attached the following image:

#3 Print Post
Posted on 09-07-2014 15:33
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Location: Tilburg Netherlands
Posts: 2198
Joined: 18.05.10

I think both belong to that C marginata/femorata/ dioctriaeformis complex


Field guide to the robber flies of the Netherlands and Belgium:
Mariastraat 12
#4 Print Post
Posted on 10-07-2014 18:31
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Location: Berlin and Baden-Württemberg, Germany
Posts: 3890
Joined: 28.07.07

Many thanks, Reinoud - obviously it is difficult to discriminate between these species basing on a photo.
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