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Diptera.info :: Identification queries :: Diptera (adults)
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Sphaeroceridae sp.
Robert Heemskerk
#1 Print Post
Posted on 07-01-2008 00:43
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Hi flyforum,

some Sphaeroceridae sp.,
identification is difficult I think?

place: Amsterdam forest
date: 6-01-2008
size: 6-7mm
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Robert Heemskerk
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Posted on 07-01-2008 00:44
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pic 2
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Edited by Robert Heemskerk on 07-01-2008 00:44
 
http://robertheemskerk.nl/plaatjevandedag.htm
Robert Heemskerk
#3 Print Post
Posted on 07-01-2008 00:44
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pic 3 (shitting!)
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Edited by Robert Heemskerk on 07-01-2008 00:45
 
http://robertheemskerk.nl/plaatjevandedag.htm
Robert Heemskerk
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Posted on 07-01-2008 00:46
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pic 4
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Edited by Robert Heemskerk on 07-01-2008 00:46
 
http://robertheemskerk.nl/plaatjevandedag.htm
Tony Irwin
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Posted on 07-01-2008 22:51
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Copromyza sp.
Tony
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Tony Irwin
 
Robert Heemskerk
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Posted on 07-01-2008 23:37
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Wow!, that's rather specific..

On the dutch specieslist:
1. Copromyza:
1. equina
2. nigrina
3. stercoraria

Is it easy to explain what makes it Copromyza?
Thankx in advance,
Robert Smile
 
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Tony Irwin
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Posted on 08-01-2008 10:41
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Robert Heemskerk wrote:
Is it easy to explain what makes it Copromyza?


Wing venation. In Leptocera and related genera, vein m is abbreviated.
In Copromyza vein CuA 1 is abbreviated (as shown very clearly in your pictures 2 and 3). In Sphaerocera the veins are not shortened at all.
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Paul Beuk
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Posted on 08-01-2008 11:38
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Not quite that simple, Tony. Those are the characters for the subfamily Copromyzinae. Within that family, Copromyza shuld have a single row of post ocular setae (might be, but I cannot say that with certainty) and there should be a apical spur ventrally on the hind tibiae (none of the pictures has the right angle to confirm its presence).
Still, I think you might be right. Based on the dust pattern on the anepisternum (mesopleuron) it should be C. equina.
Paul

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jorgemotalmeida
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Posted on 08-01-2008 12:24
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Only for those which are not familiar with the terms:

"Those are the characters for the subfamily Copromyzinae. Within that family, Copromyza should have a single row of post ocular setae (might be, but I cannot say that with certainty) and there should be a apical spur ventrally on the hind tibiae (none of the pictures has the right angle to confirm its presence).
Still, I think you might be right. Based on the dust pattern on the anepisternum (mesopleuron) it should be C. equina."

setae is the plural form, seta is the singular form. See here for more details (7th post): http://www.dipter...ad_id=8790

spur - very strong bristle/seta. See for example Mycetophilidae - Neoclastobasis sibirica - (http://diptera.in...to_id=2440 -- gallery) that has spurs in tibiae.

see here for anepisternum (=mesopleuron) -it is the number 21 http://www.dipter...ad_id=8803
Edited by jorgemotalmeida on 08-01-2008 12:25
 
http://www.flickr.com/photos/superegnum
Tony Irwin
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Posted on 08-01-2008 12:52
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My apologies - Paul is correct - I should have said Copromyzinae, rather than Copromyza.
Tony
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