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Posted by Robert Heemskerk on 07-01-2008 23:37

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 :)

Posted by Tony Irwin on 08-01-2008 10:41

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.

Posted by Paul Beuk on 08-01-2008 11:38

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.

Posted by jorgemotalmeida on 08-01-2008 12:24

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 header=[apical] body=[The adjective of apex. Example: 'Arista commonly bare on apical half' means that the second half of the arista (starting from the third antennal segment) is bare. Opposite of basal.<br /><img src='infusions//terms/images/no_image.gif' style='vertical-align:middle;' />] delay=[0] fade=[on]

header=[apical] body=[The adjective of apex. Example: 'Arista commonly bare on apical half' means that the second half of the arista (starting from the third antennal segment) is bare. Opposite of basal.<br /><img src='infusions//terms/images/no_image.gif' style='vertical-align:middle;' />] delay=[0] fade=[on]

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