Diptera.info :: Identification queries :: Diptera (adults)
 Opomyza petrei ?
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| Josef Buecker |
Posted on 10-09-2010 19:39
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 Member Location: Hagen, Germany Posts: 616 Joined: 03.02.08 |
Hello Forum, a rather small fly. By means of the gallery, I decided for Opomyza petrei. Is that correct? Not? What else? Hagen, NRW, Germany, 10. September 2010, near beech forest, 150msm, Best regards, Josef Josef Buecker attached the following image:  [127.45Kb] |
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| Jan Willem |
Posted on 10-09-2010 22:21
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 Member Location: Waalwijk, The Netherlands Posts: 2169 Joined: 24.07.04 |
Could be either Opomyza germinationis or G. petrei. Do you have other pictures with a better view on the abdomen?
Jan Willem van Zuijlen |
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| Nikita Vikhrev |
Posted on 10-09-2010 22:49
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 Member Location: Moscow, Russia Posts: 9555 Joined: 24.05.05 |
It isn't my group, but I have to say that Mesnil didn't convinced me that petrei is a good species  Anyway, without abdomen it is germinationis, because Linnaeus was almost 300 years earlier!
Nikita Vikhrev - Zool Museum of Moscow University |
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| Jan Willem |
Posted on 11-09-2010 07:07
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Member Location: Waalwijk, The Netherlands Posts: 2169 Joined: 24.07.04 |
Besides the difference in colouration of the abdomen (which "can" be a bit tricky), there are differences in the genitalia and in the hairs on the proepisternum.
Jan Willem van Zuijlen |
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| Mark-uk |
Posted on 11-09-2010 11:19
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 Member Location: UK - Hampshire Posts: 792 Joined: 01.02.10 |
I concur. Most of the germinationis group I find, the markings on the abdomen are clear cut. One sometimes finds the odd specimen that is doubtful. There are very good genitalia illustrations in "Drake, C.M. 1993. A review of the British Opomyzidae" that soon resolve any doubts. |
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