Diptera.info :: Identification queries :: Diptera (adults)
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 Opomyzidae, Geomyza hackmani
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| JariF |
Posted on 13-07-2008 19:38
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 Member Location: Helsinki, Finland Posts: 2072 Joined: 20.01.06 |
Hi, can this be a species of Opomyzidae ? I have never seen one and I don't have any in my collection. Or is it just some of the Pallopteridae species ? Size 4mm and place Loviisa, Southern Finland today. Jari JariF attached the following image:  [61.41Kb] Edited by JariF on 14-07-2008 16:50 |
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| jorgemotalmeida |
Posted on 13-07-2008 19:57
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 Member Location: Viseu - PORTUGAL Posts: 9296 Joined: 05.06.06 |
maybe Opomyza cf. tripunctata |
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| Stephane Lebrun |
Posted on 13-07-2008 20:33
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 Member Location: Le Havre, France Posts: 8248 Joined: 03.03.07 |
You meant Geomyza tripunctata, I suppose.
Stephane. |
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| jorgemotalmeida |
Posted on 13-07-2008 20:37
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Member Location: Viseu - PORTUGAL Posts: 9296 Joined: 05.06.06 |
yep!  Geomyza tripunctata!!! |
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| JariF |
Posted on 13-07-2008 21:55
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Member Location: Helsinki, Finland Posts: 2072 Joined: 20.01.06 |
Thank You so much ! A new family for me Jari |
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| Jan Willem |
Posted on 14-07-2008 08:59
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 Member Location: Waalwijk, The Netherlands Posts: 2161 Joined: 24.07.04 |
This is definitely not Geomyza tripunctata. It is a female of the so-called combinata group. It is most probably either Geomyza balachowskyi or G. hackmani. Difficult to say after a photo.
Jan Willem van Zuijlen |
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| JariF |
Posted on 14-07-2008 09:33
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Member Location: Helsinki, Finland Posts: 2072 Joined: 20.01.06 |
Ok, then we have a new situation  G.hackmani belongs to our species list but balachowskyi not. Is the difference in genitalia on visible ? Thank You very much !Jari |
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| Jan Willem |
Posted on 14-07-2008 10:26
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Member Location: Waalwijk, The Netherlands Posts: 2161 Joined: 24.07.04 |
I have to admit that there is a good chance that it is indeed G. hackmani. There is a difference in sternite 8.
Jan Willem van Zuijlen |
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| JariF |
Posted on 14-07-2008 10:39
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Member Location: Helsinki, Finland Posts: 2072 Joined: 20.01.06 |
Ok, thank You again. I must do a good examination when I go back home. I will label it cf hackmani so far. Jari |
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| Jan Willem |
Posted on 14-07-2008 11:13
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Member Location: Waalwijk, The Netherlands Posts: 2161 Joined: 24.07.04 |
The abdomen of the females of G. balachowskyi often has a more "striped" appearance. Furthermore the postscutellum is normally less dark in G. balachowskyi. However both characters are not to be relied upon too much. To be certain, sternite 8 should be checked.
Jan Willem van Zuijlen |
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| JariF |
Posted on 14-07-2008 16:53
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Member Location: Helsinki, Finland Posts: 2072 Joined: 20.01.06 |
Thank's to Jan Willems papers I could find the ID Now I'm sure it's hackmani. The specimen was still fresh enough to get sternite 8 wisible. Jari |
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