Diptera.info :: Identification queries :: Diptera (adults)
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 Phaoniinae.. I think=Phaonia rufiventris
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| philporter |
Posted on 12-10-2010 16:23
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Member Location: Lincoln UK Posts: 554 Joined: 07.02.07 |
I would be grateful for a confirmation of genus or better, please. I want to use my Fonseca key but struggle every time.
philporter attached the following image:  [44.69Kb] Edited by philporter on 28-10-2010 10:17 |
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| Stephane Lebrun |
Posted on 12-10-2010 17:44
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 Member Location: Le Havre, France Posts: 8248 Joined: 03.03.07 |
The picture is a bit small and I can't see well all the chaetotaxy, but it should be a male Phaonia, in subventa group (I think P. subventa itself, named variegata in d'A.Fonseca). I let you check. Thricops simplex could be a second candidate, but as far as I can see, there are neither ad on mid tibia, nor posterior on fore one. This latter has only 3 postsutural dc and setulae on posterior inner margin of hind coxa. Stephane. |
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| philporter |
Posted on 13-10-2010 09:05
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Member Location: Lincoln UK Posts: 554 Joined: 07.02.07 |
Thank you very much Stephane, that is just the sort of background I wanted and it reduces the problem down to a manageable level for a beginner |
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| philporter |
Posted on 13-10-2010 13:02
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Member Location: Lincoln UK Posts: 554 Joined: 07.02.07 |
Stephane, following on from your most helpful information, using Fonseca, I think it must be Phaonia (populi) rufiventris, because it has only 1 pair of pre-sutural acrostichal bristles, and scutellum orange with only a very small dark base, although the dark median presutural stripes each seem much less than 40% of the width of the pale central stripe, unless they are both to be taken into account which seems unlikely. The single pair of p-s. acro.'s also excludes Thricops simplex. Is there anything further to say? |
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| Stephane Lebrun |
Posted on 13-10-2010 17:00
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Member Location: Le Havre, France Posts: 8248 Joined: 03.03.07 |
Nothing else, you did all right ! 
Stephane. |
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| philporter |
Posted on 13-10-2010 20:43
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Member Location: Lincoln UK Posts: 554 Joined: 07.02.07 |
That's excellent Stephane. Thank you. |
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