Diptera.info :: Identification queries :: Diptera (adults)
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 little sunbathing flies
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| Robert Heemskerk |
Posted on 26-09-2008 21:53
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 Member Location: Amsterdam, Netherlands Posts: 2082 Joined: 17.10.05 |
hi flyforum, This 4-5mm sized flies, where sunbathing on the bank of thel lake. I thought it where anthomyiidae but the arista is plumosa. IS it Muscidae? Or what kind of fly is it? place: Amsterdam forest date: 25-09-2008 Robert Heemskerk attached the following image:  [110.63Kb] Greeting, Robert Heemskerk ---- WWW: http://robertheem...ndedag.htm --- |
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| Robert Heemskerk |
Posted on 26-09-2008 21:53
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Member Location: Amsterdam, Netherlands Posts: 2082 Joined: 17.10.05 |
pict 2 , more dorsal view
Robert Heemskerk attached the following image:  [134.03Kb] Edited by Robert Heemskerk on 26-09-2008 21:54 Greeting, Robert Heemskerk ---- WWW: http://robertheem...ndedag.htm --- |
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| Robert Heemskerk |
Posted on 26-09-2008 21:54
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Member Location: Amsterdam, Netherlands Posts: 2082 Joined: 17.10.05 |
some more details
Robert Heemskerk attached the following image:  [111.9Kb] Edited by Robert Heemskerk on 26-09-2008 21:54 Greeting, Robert Heemskerk ---- WWW: http://robertheem...ndedag.htm --- |
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| Nikita Vikhrev |
Posted on 26-09-2008 23:11
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 Member Location: Moscow, Russia Posts: 9558 Joined: 24.05.05 |
Robert, plumose arista doesn't exclude Anthomyiidae. On the contrary, it helps to ID. Small Anthomyiid with very lond plumose arista - I think Hylemya partita
Nikita Vikhrev - Zool Museum of Moscow University |
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| Robert Heemskerk |
Posted on 27-09-2008 00:00
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Member Location: Amsterdam, Netherlands Posts: 2082 Joined: 17.10.05 |
thanks a lot Nikita, Good to know these, it felt much Anthomyiidae for me.. Hylemya partita isn't on the Dutch specieslist? other Hylemya which occur in the Netherlands are: 1. Hylemya nigrimana (Meigen, 1826) [soort] 2. Hylemya urbica (Van der Wulp, 1896) [soort] 3. Hylemya vagans (Panzer, 1798) [soort] 4. Hylemya variata (Fallén, 1823) [soort] Is there another Hylemya with these long plumose arista? Or is it just a new specie for The Netherlands 
Greeting, Robert Heemskerk ---- WWW: http://robertheem...ndedag.htm --- |
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| Nikita Vikhrev |
Posted on 27-09-2008 07:27
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Member Location: Moscow, Russia Posts: 9558 Joined: 24.05.05 |
It may be under name Helemyza partita
Nikita Vikhrev - Zool Museum of Moscow University |
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| Robert Heemskerk |
Posted on 27-09-2008 12:23
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Member Location: Amsterdam, Netherlands Posts: 2082 Joined: 17.10.05 |
Yes  , I found it under the name Helemyza partita (there's one Helemyza sp. on the list and that's this one)
Greeting, Robert Heemskerk ---- WWW: http://robertheem...ndedag.htm --- |
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| Robert Heemskerk |
Posted on 03-10-2008 23:44
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Member Location: Amsterdam, Netherlands Posts: 2082 Joined: 17.10.05 |
Is this Helemyza partita as well? It was some mm longer and the colour of the thorax is different.. Simular is the long plumose arista. Is this 'the male' ? Helemyza partita? Robert Heemskerk attached the following image:  [149.45Kb] Edited by Robert Heemskerk on 03-10-2008 23:45 Greeting, Robert Heemskerk ---- WWW: http://robertheem...ndedag.htm --- |
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| Robert Heemskerk |
Posted on 03-10-2008 23:46
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Member Location: Amsterdam, Netherlands Posts: 2082 Joined: 17.10.05 |
lateral
Robert Heemskerk attached the following image:  [155.41Kb] Edited by Robert Heemskerk on 03-10-2008 23:46 Greeting, Robert Heemskerk ---- WWW: http://robertheem...ndedag.htm --- |
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| Robert Heemskerk |
Posted on 03-10-2008 23:52
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Member Location: Amsterdam, Netherlands Posts: 2082 Joined: 17.10.05 |
crop of the head
Robert Heemskerk attached the following image:  [122.52Kb] Edited by Robert Heemskerk on 03-10-2008 23:52 Greeting, Robert Heemskerk ---- WWW: http://robertheem...ndedag.htm --- |
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| Robert Heemskerk |
Posted on 04-10-2008 23:55
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Member Location: Amsterdam, Netherlands Posts: 2082 Joined: 17.10.05 |
I have watched a crop of the thorax and scutellum of this fly. Trying to find some similarity with Anthomyiidae, but now I see that the little thin light hairs are not on the scutellum, but 'under' it.. Are the little black hairs on or next to the scutellum also characteristic for Anthomyiidae? This looks like Anthomyiidae to me, but I am really not sure.. With these hudge plumose arista it could be Helemyza partita (according to Nikita) but what makes me unsure are: - size of the fly > 5mm - the frons of the fly is different (but it's a male so it could be different) - the colouring of the thorax. I'll publice some more detail of the scutellum Robert Heemskerk attached the following image:  [140.15Kb] Edited by Robert Heemskerk on 04-10-2008 23:55 Greeting, Robert Heemskerk ---- WWW: http://robertheem...ndedag.htm --- |
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