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Diptera.info :: Family forums :: Syrphidae
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Merodon... equestris? (3 pics)
Rupert Huber
#1 Print Post
Posted on 19-07-2022 18:55
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Location: Germany / South-East Bavaria
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Hi all!

If the legs were all black, as they are supposed to be, I wouldn't ask. But they aren't. So: Is it Merodon equestris?

Approx. 10-12 mm

18.7.2022, Germany, Upper Bavaria, Freilassing, a few metres from little lake "Ausee", ~420 m asl, coordinates 47.84127, 12.99722
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Rupert Huber
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Posted on 19-07-2022 18:55
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Location: Germany / South-East Bavaria
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2nd pic
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Rupert Huber
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Posted on 19-07-2022 18:56
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last pic
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Sundew
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Posted on 21-07-2022 02:58
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Location: Berlin and Baden-Württemberg, Germany
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Such a loop in wing vein R4+5 is typical for Merodon and Eristalis. However, the shape of cell r4+5 is different in Eristalis, and the bumblebee mimic E. intricaria has also a yellow scutellum. So we have to look for Merodon indeed. There are 10 predominantly rare species in Germany, and the legs of most of them are partly pale. M. equestris with completely black legs (including the hairs) is off the table. It is also not M. moenium (formerly thought to be M. avidus). But the other species are unknown to me. The key for France (https://www.resea...ion_detail) covers most of them, but I am not able to find out a species with your three pictures - sorry! So your female will remain Merodon spec.
Regards, Sundew
Edited by Sundew on 21-07-2022 02:59
 
Rupert Huber
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Posted on 21-07-2022 07:35
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Many thanks for your efforts Sundew!

So another rather complicated genus... again what learned. At least I was right with my heavy doubts about equestris.

This picture shows a bit of the obviously important femur's shape, but with its extremely poor quality, and still not ideal perspective, I of course don't expect it to help much further.
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Rupert
 
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23.06.25 18:10
If you have some spare money, there is a copy (together with keys to pupae and larvae) for sale by Hermann L. Strack, Loguivy Plougras, France

23.06.25 11:18
Appreciate it, Tony Irwin! I got the hint to use the key next to Langton and Pinder key for females of Chironomidae. So no specific queries, except the keys... I will keep this on my list and hope th

19.06.25 15:33
I have the hard copy book, if you have any specific queries, but I'm not scanning the 500+ pages!

02.06.25 18:26
Anyone has "Chironomidae of the Holarctic region. Keys and diagnoses. Part 3. Adult Males Entomologica Scandinavica Supplement 34"? smolwaarneming@gma
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28.05.25 20:57
I have Russian Coenosia. nikita6510@ya.ru

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Is someone able to share with me "A key to the Russian species of the genus Coenosia"?

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I have

03.05.25 08:35
Does someone has a scan of Nartshuk E.P. 2003. Key to families of Diptera (Insecta) of the fauna of Russian and adjacent countries. Proceedings of the Zoological Institute Vol. 294: 1-252 for me?

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