Diptera.info :: Identification queries :: Diptera (adults)
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 Anthomyiidae 2013-VI-18 (= possibly Delia)
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| John Carr |
Posted on 09-02-2014 01:40
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 Member Location: Massachusetts, USA Posts: 9884 Joined: 22.10.10 |
Massachusetts, USA June 18, 2013 The general color of the thorax, brownish gray with dark spots, resembles a common species of Eutrichota, but that species has red legs and a yellow tipped scutellum. John Carr attached the following image:  [65.04Kb] Edited by John Carr on 11-11-2014 02:05 |
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| John Carr |
Posted on 10-11-2014 13:45
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Member Location: Massachusetts, USA Posts: 9884 Joined: 22.10.10 |
Could this be Delia platura with 2 pd on mid tibia? If not Delia the most likely genus in the old keys by Huckett is Pegohylemyia, which may mean Botanophila now. I don't know where all the species went. |
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| javanerkelens |
Posted on 10-11-2014 22:32
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 Member Location: Netherlands Posts: 2962 Joined: 18.10.07 |
I can see 2 ad setae on the midtibia and there are not many female species with 2 ad on t2. In your case I am thinking about Botanophila striolata / discreta or Delia antiqua. In female B. striolata / discreta the gena is relative wide and on your photo the gena seems small. So….maybe your fly could be Delia antiqua (Onion-fly) But without the species in hand and only one photo taken……….it keeps a wild guess!...  Johanna |
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| John Carr |
Posted on 11-11-2014 02:04
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Member Location: Massachusetts, USA Posts: 9884 Joined: 22.10.10 |
What I can see matches Delia antiqua, including the lower ad on t2 being especially long. According to Griffiths, in the contiguous USA D. antiqua is associated with cultivated onions. In northwestern Canada and Alaska it feeds on native Allium. There are no cultivated onions within .5 km (park boundaries) but there are within 10 km. Botanophila has not been revised in the New World. Huckett (1965) provided a key to northern species (under older names). I can rule out many species, e.g. by the bare arista and well developed acrostichals. I have no descriptions to compare to. The photos I have seen (http://www.biodiv...homyiidae/, as Pegohylemyia) show uniformly dark and dull flies. The color of mine, gray with dark spots, matches D. antiqua. |
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but don't see the image in the post.