Diptera.info :: Identification queries :: Diptera (adults)
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 Dolichopodidae, Sweden
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| morfa |
Posted on 23-07-2007 14:15
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Member Location: Posts: 246 Joined: 30.09.06 |
Medium sized (6mm) doli on northern ?land (Sweden). Not sure what the prey is (worm or larva?).  Larger view here: http://farm2.stat...54e3_b.jpg Edited by morfa on 20-02-2009 12:22 |
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| Susan R Walter |
Posted on 24-07-2007 13:17
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 Member Location: Touraine du Sud, central France Posts: 1802 Joined: 14.01.06 |
Lovely shot.
Susan |
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| morfa |
Posted on 24-07-2007 14:56
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Member Location: Posts: 246 Joined: 30.09.06 |
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] |
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| Nikita Vikhrev |
Posted on 24-07-2007 17:43
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 Member Location: Moscow, Russia Posts: 9404 Joined: 24.05.05 |
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 |
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| Igor Grichanov |
Posted on 24-07-2007 17:44
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 Member Location: St.Petersburg, Russia Posts: 1747 Joined: 17.08.06 |
Last shot even more lovely. Unfortunately, female of Dolichopus.
Igor Grichanov |
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| Nikita Vikhrev |
Posted on 24-07-2007 19:09
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Member Location: Moscow, Russia Posts: 9404 Joined: 24.05.05 |
Still I have questions: 2.? 4.? 5.? 
Nikita Vikhrev - Zool Museum of Moscow University |
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| morfa |
Posted on 25-07-2007 06:58
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Member Location: Posts: 246 Joined: 30.09.06 |
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 |
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| Igor Grichanov |
Posted on 25-07-2007 07:26
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Member Location: St.Petersburg, Russia Posts: 1747 Joined: 17.08.06 |
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 |
Posted on 25-07-2007 08:11
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Member Location: Moscow, Russia Posts: 9404 Joined: 24.05.05 |
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 |
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| Adrian |
Posted on 25-07-2007 09:17
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Member Location: Posts: 69 Joined: 05.01.07 |
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 |
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| Paul Beuk |
Posted on 13-11-2014 15:13
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 Super Administrator Location: Netherlands Posts: 19403 Joined: 11.05.04 |
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 - - - - Paul Beuk on https://diptera.info |
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