Diptera.info :: Identification queries :: Diptera (adults)
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 Anthomyiidae on a leaf (= Hydrophoria lancifer)
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| John Carr |
Posted on 30-10-2010 23:39
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 Member Location: Massachusetts, USA Posts: 8286 Joined: 22.10.10 |
Massachusetts, USA in June in deciduous woods. It was having wing difficulty and couldn't fly away from me immediately. I think this is Anthomyiidae based on the strong anal vein, but the wing margin is torn and I can't say where the vein would end if the wing were intact. I have more and larger pictures at http://www.flickr...41/detail/ Similar flies (Muscidae and Anthomyiidae both, I think) are common on leaves beside trails in these woods in summer. Edited by John Carr on 01-06-2012 22:50 |
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| javanerkelens |
Posted on 31-10-2010 20:12
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 Member Location: Netherlands Posts: 2960 Joined: 18.10.07 |
Bit difficult to say, with only this photo. My guess is Hydrophoria lancifer..... Joke |
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| John Carr |
Posted on 31-10-2010 21:09
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Member Location: Massachusetts, USA Posts: 8286 Joined: 22.10.10 |
javanerkelens wrote: Bit difficult to say, with only this photo. My guess is Hydrophoria lancifer..... Joke There's a link to closer pictures below the photo. Is H. lancifer Holarctic? The references I find for it are for Europe. |
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| javanerkelens |
Posted on 31-10-2010 21:32
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Member Location: Netherlands Posts: 2960 Joined: 18.10.07 |
Ha ha...indeed more photos! H.lancifer it is! And H.lancifer is indeed Holarctic Joke |
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| John Carr |
Posted on 02-11-2010 08:33
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Member Location: Massachusetts, USA Posts: 8286 Joined: 22.10.10 |
How can you tell genus and species? If I use the key to genera in Manual of Nearctic Diptera I can't make out some crucial hairs, e.g. I can't tell whether the katepimeron is haired. Is there a more easily visible combination of characters to identify Hydrophoria (and H. lancifer)? |
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| javanerkelens |
Posted on 02-11-2010 09:52
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Member Location: Netherlands Posts: 2960 Joined: 18.10.07 |
Arista long haired. Prealar longer than posterial notopleural seta 3 dorsal centrals Scutellum covered with short hairs Anterior spiracle yellowish Wingbase strong yellowish 2 pd on hindtibia....upper one is broken on the right leg (visible on photo X9201) and 2pd just visible on left leg on photo X9209 And tibia yellowish (not strong) This combinations of characters makes it a H.lancifer Joke  |
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| Stephen R |
Posted on 04-11-2010 17:28
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 Member Location: Clitheroe Lancashire UK Posts: 2378 Joined: 12.06.09 |
Joke, it sounds as if you could be on the way to building up an interactive key for Anthomyiidae species. Would you consider releasing a Delta database one day? Even an incomplete one would be a wonderful thing! Stephen (expert in making work for other people  ) |
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| javanerkelens |
Posted on 04-11-2010 23:26
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Member Location: Netherlands Posts: 2960 Joined: 18.10.07 |
Would you consider releasing a Delta database one day? Even an incomplete one would be a wonderful thing! I know that Ackland is buzy with an update of his key, and also Verner Michelsen is at present writing some proviisional keys to European Anthomyiidae. So i wait patient  |
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| John Carr |
Posted on 01-06-2012 22:49
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Member Location: Massachusetts, USA Posts: 8286 Joined: 22.10.10 |
Michael Ackland has identified a similar fly from the same location as Hydrophoria lancifer. The species was introduced to the Northeast USA in the 1920s. |
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| Michael Ackland |
Posted on 02-06-2012 12:15
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Member Location: Dorset UK Posts: 680 Joined: 23.02.08 |
John, your Flickr photos are very good, and one can see without difficulty that they are H. lancifer. Joke's characters (2-11-2010) for this species unfortunately also lead to Eutrichota praepotens Wied! Not Nearctic though. It will never be possible to have a key to anthomyiid photos. One always needs a specimen to be certain. |
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