Diptera.info :: Identification queries :: Diptera (adults)
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 Opomyzidae
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| Ben Hamers |
Posted on 10-01-2011 21:37
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Member Location: Heerlen ( Holland ) Posts: 739 Joined: 16.12.04 |
This one looks like Geomyza paganettii in the gallery, but not all Dutch Geomyza's are present there. Rather small, 3 mm and I saw it a week ago on snow in Southern Limburg. Ben Ben Hamers attached the following image:  [43.63Kb] |
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| Jan Willem |
Posted on 10-01-2011 22:58
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 Member Location: Waalwijk, The Netherlands Posts: 2170 Joined: 24.07.04 |
Hello Ben, Looks very interesting. Did you collect a specimen? In that case I would be very interested in having a look at it. If I see it correctly, the specimens seem to have 1+2 dorsocentrals. This would point to either Geomyza breviseta or G. subnigra and not G. paganettii, which has 1+3 dc. It looks most like G. breviseta to me, but you would need to study sternite 8 to be absolutely sure. I'm very interested in more details on these specimens. G. paganettii would be new to the fauna of the Netherlands, but also the other two species are very interesting because only a few specimens of both species have been found in the Netherlands sofar. Edited by Jan Willem on 10-01-2011 23:01 Jan Willem van Zuijlen |
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| Ben Hamers |
Posted on 11-01-2011 00:05
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Member Location: Heerlen ( Holland ) Posts: 739 Joined: 16.12.04 |
Thanks Jan Willem, I didn't collect the fly. After a couple of hours in the snow all flies look more or less the same and I didn't realize it was a Geomyza until I saw it on the screen at home. I saw the fly (only one, the first picture is photoshopped) on the Kunderberg, 03-01-11. I think the second picture shows that you are right about the dorsocentrals. Ben Ben Hamers attached the following image:  [33.09Kb] |
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| Jan Willem |
Posted on 11-01-2011 07:39
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Member Location: Waalwijk, The Netherlands Posts: 2170 Joined: 24.07.04 |
Thanks for the additional information Ben. If you happen to find this species again, please collect one, to allow us to make sure wether we are dealing with G. breviseta or G. subnigra. For these two I would say Geomyza cf. breviseta.
Jan Willem van Zuijlen |
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| Ben Hamers |
Posted on 11-01-2011 20:03
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Member Location: Heerlen ( Holland ) Posts: 739 Joined: 16.12.04 |
Thanks a lot Jan Willem, I will do my best trying to find another one Ben |
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