Diptera.info :: Identification queries :: Diptera (adults)
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 Geomyza
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| Michael Becker |
Posted on 08-10-2007 20:50
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Member Location: Germany, Neuss Posts: 1268 Joined: 16.01.07 |
Hello, can genus or species be identified? Thanks Michael Michael Becker attached the following image:  [29.28Kb] Edited by Michael Becker on 09-10-2007 15:02 |
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| Nikita Vikhrev |
Posted on 08-10-2007 20:52
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 Member Location: Moscow, Russia Posts: 9354 Joined: 24.05.05 |
Geomyza, Opomyzidae
Nikita Vikhrev - Zool Museum of Moscow University |
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| Michael Becker |
Posted on 08-10-2007 21:00
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Member Location: Germany, Neuss Posts: 1268 Joined: 16.01.07 |
Oh yes, it really looks like Geomyza. I thought I could remember the fly swing its wings just like a sepsid. Perhaps I was wrong... Michael |
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| Nikita Vikhrev |
Posted on 08-10-2007 21:14
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Member Location: Moscow, Russia Posts: 9354 Joined: 24.05.05 |
I think, Michael, it is correlated characters - to have spot on wing apex and to move wings making itselt good visible for sexual partner or sexual competitor 
Nikita Vikhrev - Zool Museum of Moscow University |
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| Michael Becker |
Posted on 09-10-2007 05:43
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Member Location: Germany, Neuss Posts: 1268 Joined: 16.01.07 |
[correlated characters] Sounds logical. Until now I just didn't remark this behaviour at flies other than Sepsidae. Could my fly be Geomyza tripunctata or is species identification - or a guess - not possible? Michael |
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| Nikita Vikhrev |
Posted on 09-10-2007 08:14
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Member Location: Moscow, Russia Posts: 9354 Joined: 24.05.05 |
1. It isn't G.tripunctata, but female of difficult speciec group "Geomyza combinata". 2. Fortunelly we have expert on this family, so change name to "Geomyza" to attract Jan's attantion and may be you will get species level. Nikita Nikita Vikhrev - Zool Museum of Moscow University |
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| Michael Becker |
Posted on 09-10-2007 15:04
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Member Location: Germany, Neuss Posts: 1268 Joined: 16.01.07 |
> Fortunelly we have expert on this family, so change name to > "Geomyza" to attract Jan's attantion and may be you will get species level. Thank you Nikita. I try it. Michael |
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| Jan Willem |
Posted on 09-10-2007 15:13
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 Member Location: Waalwijk, The Netherlands Posts: 2137 Joined: 24.07.04 |
Hi Michael and Nikita, Nikita is right about this being a female of the "combinata group". Although not for 100% certain, this is most likely a female of Geomyza balachowskyi. The other species of the "combinata group have a much darker abdomen (in most cases). To be absolutely certain, the shape of sternite 8 must be checked (which is in most cases retracted and therefor not visible). But I hardly doubt this is G. balachowskyi, which is a rather common species in Grmany (I suppose that is where you collected this specimen!?). |
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| Michael Becker |
Posted on 09-10-2007 15:26
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Member Location: Germany, Neuss Posts: 1268 Joined: 16.01.07 |
Thank you for the very quick answer. I made the picture indeed in germany, in the rhineland near Cologne. I don't have a picture from below, so we can't check the sternite, but a "probably G. balachowskyi" is absolutely enough for me. It's just, that I can sort the pictures on my harddisk. I see, that a picture of G. balachowskyi already exists in the gallery too. Thanks, Michael |
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