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Diptera.info :: Identification queries :: Diptera (adults)
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Dolichopodidae from USA
Isidro
#1 Print Post
Posted on 17-08-2019 20:32
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Location: Zaragoza, Spain
Posts: 1866
Joined: 26.04.07

Boston, Massachusetts.
24th July 2019.
On a wooden fence that divides a forest from a park.
Any help with ID appreciated! Thanks!

i.ibb.co/Wk9J3yJ/P1250791-24-7-19-Arnold-Arboretum.jpg
 
John Carr
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Posted on 18-08-2019 01:58
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Location: Massachusetts, USA
Posts: 7145
Joined: 22.10.10

Dolichopus or Gymnopternus
 
http://www.flickr.com/photos/31715949@N00
Isidro
#3 Print Post
Posted on 18-08-2019 07:11
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Location: Zaragoza, Spain
Posts: 1866
Joined: 26.04.07

Thanks, not possible to distinguish between both genus?
 
John Carr
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Posted on 18-08-2019 19:23
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Location: Massachusetts, USA
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If there are bristles on the hind basistarsis and vein M is bent abruptly in the middle of the last section as seen from above, Dolichopus. If the hind basitarsus is bare and vein M is nearly straight in the middle, Gymnopternus. What I can see of the color, bronze stripe on thorax and pale lower postocular hairs, is more typical of Dolichopus. Also, Gymnopternus usually has a row of short bristles on the fore tibia where long bristles are visible.
 
http://www.flickr.com/photos/31715949@N00
Isidro
#5 Print Post
Posted on 18-08-2019 22:00
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Location: Zaragoza, Spain
Posts: 1866
Joined: 26.04.07

s Joh, I fear that the hind tarsi are not enough in focus for distinguish the bristles. If generic identification is nearly impossible I suppose that specific ID will be much so.
 
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Date and time
20 September 2019 15:02
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18.09.19 20:06
Jewell699, you should post it in the forum, not submit it for the gallery.

15.09.19 20:41
Jewelm699 - did you upload it to a forum (which one?) or the gallery? I can't find it.

11.09.19 13:15
I’m hoping someone can identify the phoridae maggot or pupae I just uploaded.

28.08.19 14:29
Rafael p is legs and f1 is fore femur

26.08.19 17:13
If you experienced a very sluggish site recently, it may have been because someone tried to upload a maliciuous script by force. It appears to have failed. The visitor was blocked further access.

25.07.19 15:13
@Paul Beuk Thanks mate!! Best wishes!

22.07.19 15:09
Where are the meaning abbreviations of Lindner's series Die Fliegen der Palaearktischen Region, ie. f1: anterior femur, ...and what about "p"? (I don't possess volume I)

17.07.19 19:37
Yup, you can view the wing from above (dorsal side) and from beneath (ventral side).

16.07.19 13:31
Hey Dipterists! Quick Question: Vein r2+3 bare beneath. I've always assumed that this is below as in when you look at the wing flat. Am I right? Thank youuuuu! Pfft

18.06.19 08:07
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