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Diptera.info :: Identification queries :: Diptera (adults)
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Dolichopodidae, Sweden
morfa
#1 Print Post
Posted on 23-07-2007 15:15
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Medium sized (6mm) doli on northern ?land (Sweden).

Not sure what the prey is (worm or larva?).

farm2.static.flickr.com/1262/858435196_a35cd854e3.jpg

Larger view here:
http://farm2.stat...54e3_b.jpg
Edited by morfa on 20-02-2009 12:22
 
Susan R Walter
#2 Print Post
Posted on 24-07-2007 14:17
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Lovely shot.Smile
Susan
 
http://loirenature.blogspot.com/
morfa
#3 Print Post
Posted on 24-07-2007 15:56
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Thanks Susan!

Not the best picture to make an ID from though I guess. Here is another one from a different angle. I realize this might be a female and that males are usually easier to id...

//John
morfa attached the following image:


[82.77Kb]
 
Nikita Vikhrev
#4 Print Post
Posted on 24-07-2007 18:43
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1. Nice photo.
2. Any idea about prey?
3. I think it is Dolichopus nigricornis/migrans
4. My photo of Dolichopus nigricornis attached. Anybody mind this ID?
5. What is correct Dolichopus nigricornis or D.discifer?
Nikita
Nikita Vikhrev attached the following image:


[113.97Kb]
Nikita Vikhrev - Zool Museum of Moscow University
 
Igor Grichanov
#5 Print Post
Posted on 24-07-2007 18:44
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Last shot even more lovely. Unfortunately, female of Dolichopus.
Igor Grichanov
 
http://grichanov.aiq.ru/index.htm
Nikita Vikhrev
#6 Print Post
Posted on 24-07-2007 20:09
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Still I have questions:
2.?
4.?
5.?
Shock
Nikita Vikhrev - Zool Museum of Moscow University
 
morfa
#7 Print Post
Posted on 25-07-2007 07:58
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Thanks Igor, that't what I suspected.

Nikita, I think your male looks a bit different from mine http://www.dipter...ad_id=7471

Then again I'm not entirely sure my male is the same species as the female in this post.

Yes, I'm curious about the prey too!

John
 
Igor Grichanov
#8 Print Post
Posted on 25-07-2007 08:26
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Dolichopus discifer Stannius, 1831: Isis (Oken) 1831: 57 // syn. of Dolichopus nigricornis Meigen, 1824 (Loew, 1869: Beschr.eur. Dipt. 1; Becker, 1917: N.Acta Acad.leop., Halle 102: 148-149); rest. Collin, 1940: Ent.monthly Mag. 76 [= (4)1]: 263 ** Type locality: Germany. Palaearctic: Norway, Finland, Sweden, Denmark, Ireland, England, Germany, Austria, Netherlands, Belgium, France, Italy, Switzerland, Czech, Slovakia, Hungary, Romania, Poland, Bulgaria, Russia, Kazakhstan; Nearctic: Canada, USA *
=Dolichopus nigricornis Becker, 1917: N.Acta Acad.leop., Halle, 102: 148; Parent, 1925: Enc.ent., Ser.B, II, Dipt. 2: 55, 56, et auctt. (nec Meigen, 1824) ** Type locality: not given. * Dolichopus discifer Stannius, 1831.

This is a citation from Collin (1940):
nigricornis Mg. (1824) and discifer Stann. (1831).
This synonymy was accepted by Loew in 1869 after Haliday had reported it as a result of an examination of Meigen's supposed type in Paris. Meigen however attributed the species to Megerle, from whom he had seen an Austrian female only, and this female be considered the type of the species. If the specimen mentioned by Loew in 1859 as present in the Vienna Museum is Megerle's female, the name nigricornis Mg. must be used for Hercostomus gracilis Stann. In the meantime the suggested synonymy of discifer Stann. with nigricornis Mg. should not be accepted.

According to Meuffels (1999):
Dolichopus nigricornis Meigen, 1824: Syst.Beschr. 4: 82 // syn. of Hercostomus gracilis (Stannius, 1831) (Loew, 1859: Progr.Realsch.Meseritz 1859: 6) * ?Hercostomus (unrecognized) (Collin, 1940: Ent.monthly Mag. 76 [= ser.4, vol. 1]: 263).

As I know, nobody more discussed these names. So, I vote for discifer.
Igor Grichanov
 
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Nikita Vikhrev
#9 Print Post
Posted on 25-07-2007 09:11
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1. Thank you Igor/
2. John, may be put image in larvae-pupa forum with question - "Is it Diptera larva?"
Nikita
Nikita Vikhrev - Zool Museum of Moscow University
 
Adrian
#10 Print Post
Posted on 25-07-2007 10:17
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I think that the prey is a chironomid larvae. Several Dolichopus apparently prey on them
At the last ICD6 conference in Fukuoka Pogonin et al showed some astounding video footage of various doli's feeding on them in Oksky NR in European Russia:- got a standing ovation for it too!
cheers
Adrian
 
Paul Beuk
#11 Print Post
Posted on 13-11-2014 15:13
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Igor Grichanov wrote:
Dolichopus discifer Stannius, 1831: Isis (Oken) 1831: 57 // syn. of Dolichopus nigricornis Meigen, 1824 (Loew, 1869: Beschr.eur. Dipt. 1; Becker, 1917: N.Acta Acad.leop., Halle 102: 148-149); rest. Collin, 1940: Ent.monthly Mag. 76 [= (4)1]: 263 ** Type locality: Germany. Palaearctic: Norway, Finland, Sweden, Denmark, Ireland, England, Germany, Austria, Netherlands, Belgium, France, Italy, Switzerland, Czech, Slovakia, Hungary, Romania, Poland, Bulgaria, Russia, Kazakhstan; Nearctic: Canada, USA *
=Dolichopus nigricornis Becker, 1917: N.Acta Acad.leop., Halle, 102: 148; Parent, 1925: Enc.ent., Ser.B, II, Dipt. 2: 55, 56, et auctt. (nec Meigen, 1824) ** Type locality: not given. * Dolichopus discifer Stannius, 1831.

This is a citation from Collin (1940):
nigricornis Mg. (1824) and discifer Stann. (1831).
This synonymy was accepted by Loew in 1869 after Haliday had reported it as a result of an examination of Meigen's supposed type in Paris. Meigen however attributed the species to Megerle, from whom he had seen an Austrian female only, and this female be considered the type of the species. If the specimen mentioned by Loew in 1859 as present in the Vienna Museum is Megerle's female, the name nigricornis Mg. must be used for Hercostomus gracilis Stann. In the meantime the suggested synonymy of discifer Stann. with nigricornis Mg. should not be accepted.

According to Meuffels (1999):
Dolichopus nigricornis Meigen, 1824: Syst.Beschr. 4: 82 // syn. of Hercostomus gracilis (Stannius, 1831) (Loew, 1859: Progr.Realsch.Meseritz 1859: 6) * ?Hercostomus (unrecognized) (Collin, 1940: Ent.monthly Mag. 76 [= ser.4, vol. 1]: 263).

As I know, nobody more discussed these names. So, I vote for discifer.

When in doubt, check the original reference: Meigen described nigricornis from both sexes but did not mention anything about a modified tarsus. Neither does Meigen's colour plate for that species show it, but the illustration for 'Dolichopus patellatus' (listed as synonym for discifer by Igor) does show it. That leads me to believe that nigricornis should not be a synonym of discifer.
Paul

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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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Thank you Elisabeth Wink

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11.06.19 14:22
Thanks to you also Paul.

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