Thread subject: Diptera.info :: Which Eristalinus?

Posted by Michael Becker on 15-09-2007 21:50
#1
Hello,

I hope I am right with genus Eristalinus. But which species is it? (Found in Zeeland, Netherlands, last week. Size about 9-10mm).

Thanks,
Michael

Posted by Isidro on 15-09-2007 22:54
#2
I think E. aeneus... not sure. Also can be E. sepulchralis?

Posted by amalia_raluca on 16-09-2007 10:29
#3
I agree with aeneus.

Best wishes,
Amalia

Posted by Michael Becker on 16-09-2007 21:30
#4
Thank you for your answers. How do you distinguish E. aeneus and E. sepulchralis. The glossy back?

Michael

Posted by amalia_raluca on 17-09-2007 09:34
#5
males are very easy to distinguish: E. aeneus-eyes meet on frons, E. sepulchralis: eyes separated. for the females the eyes is also importants for ID: on sepulchralis - eyes hairy allover, aeneus - eyes bare on lower half (M.P van Veen)
E, aeneus - the abdomen is entirely glossy black or greenish bronze; in the field it may often be recognized as having a more elongate body than that of sepulchralis (Alan E, Stubbs, steven J. Falk, 1983).
I hope this information are useful for you.
Amalia