Posted by wildrocker on 18-04-2015 20:19
#1
Hi guys...
Can you tell me the species of this diptera?
Photographed today in Milan (Italy)
Thanks :-D
Edited by wildrocker on 19-04-2015 16:22
Posted by javanerkelens on 18-04-2015 21:44
#3
The necessary characters are not good visible, but likely
Hylemya species.
For species level, we need a more closer look...
Johanna
Posted by wildrocker on 18-04-2015 21:57
#4
Thanks to all.
Unfortunately i only shoot 2 times.
Which part of body need more closer? I can do a crop if necessary :-)
Posted by javanerkelens on 18-04-2015 22:03
#5
A crop of the arista and if possible the apical end of the midfemur to see if there is a subapical ad present (very short hair and sometimes very difficult to see)
Posted by javanerkelens on 18-04-2015 22:49
#7
Hylemya seems right.
I had to make a terrible version of the last photo in Photoshop to see if there is an subapical ad seta on the mid femur, but it seems to be present. (on the photo just above the Arrow and barely visible)
With such subapical ad seta it could be
Hylemya urbica or
Hylemya variata.
The differents between those two species is mostly only with surtainty to ID if we can look at the genitals.
On outer characters the differents are:
Hylemya urbica: Longest rays of arista barely as long as width of postpedicel. Male: Frons at narrowest part more than half as wide as outer distance between posterior ocelli; frontal vitta at this point at least half as wide as frons
Hylemy variata: Longest rays of arista distinctly longer than width of postpedicel. Male: Frons at narrowest part at the most half as wide as outer distance between posterior ocelli; frontal vitta at this point less than half as wide as frons, sometimes suppressed by contiguous parafrontalia.
These characters are mostly not reliable from photos!
So I would say, save this fly as
Hylemya urbica / variata
Johanna
Edited by javanerkelens on 18-04-2015 22:51
