Diptera.info :: Identification queries :: Diptera (adults)
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 Fannia sp.?
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| Robert Heemskerk |
Posted on 03-02-2008 20:23
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 Member Location: Amsterdam, Netherlands Posts: 2082 Joined: 17.10.05 |
hi flyforum, This afternoon, I found this fly on bark of Ash. It looks like Fannia to me but I am not sure. Size ~8mm place: Amsterdam forest temperature: 5 degrees Robert Heemskerk attached the following image:  [151.63Kb] |
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| Robert Heemskerk |
Posted on 03-02-2008 20:23
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Member Location: Amsterdam, Netherlands Posts: 2082 Joined: 17.10.05 |
pic 2
Robert Heemskerk attached the following image:  [146.38Kb] Edited by Robert Heemskerk on 03-02-2008 20:24 |
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| Robert Heemskerk |
Posted on 03-02-2008 20:24
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Member Location: Amsterdam, Netherlands Posts: 2082 Joined: 17.10.05 |
pic 3
Robert Heemskerk attached the following image:  [113.51Kb] Edited by Robert Heemskerk on 03-02-2008 20:24 |
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| Stephane Lebrun |
Posted on 03-02-2008 20:51
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 Member Location: Le Havre, France Posts: 8248 Joined: 03.03.07 |
Fannia don't have 4 dc beyond suture. It's a Muscidae, I think Hebecnema. In this case, it should be Hebecnema nigra with white parafacialia, entirely black legs and virtually bare eyes.
Stephane. |
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| Robert Heemskerk |
Posted on 03-02-2008 21:42
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Member Location: Amsterdam, Netherlands Posts: 2082 Joined: 17.10.05 |
Thank you Stephane, for your explanation. I have watched several Fannia's and they have less dc beyond suture (mostly 3?). The suture isn't always good visible on these Fannia sp.? (just a bit) Is Hebecnema nigra a winter species? or a early spring species? My second Muscidae sp. in winter, so far. |
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| Stephane Lebrun |
Posted on 03-02-2008 22:08
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Member Location: Le Havre, France Posts: 8248 Joined: 03.03.07 |
Fannia have not a well marked suture indeed, and 2+3 dc. Other differences are : arista never plumose (only Piezura have into Faniidae), wing venation particular (especially Sc, A1 and A2). Hebecnema nigra flight period is said IV-IX, so this one is two months earlier than usual. Stephane. |
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