Thread subject: Diptera.info :: Syrphidae ?
Posted by Robert Heemskerk on 17-05-2007 22:48
#1
Hello Flyforum,
Today I found this 'strange' fly in low(wet) vegetation in the Amsterdam Forest.
I though it was Syrphidae sp. and perhabs Cheilosia?
But what kind of Cheilosia? and is it Syrphidae indeed?
size ~10-15mm
colour of thorax blue-green metalic shiny
Cheilosia Variabilis ?
I am wondering what it is ;)
Edited by Robert Heemskerk on 17-05-2007 23:06
Posted by Dieter on 17-05-2007 23:41
#2
Hi,
Cheilosia albitarsis (probably) or ranunculi.
Regrads,
Dieter
Posted by Robert Heemskerk on 18-05-2007 21:56
#3
Thank you for your comment Dieter,
I think you are right and it is Cheilosia albitarsis.
When I have a close look to the first leg (tarsus II, III and IV) then you can see that the colour is yellow-white.
Must be Cheilosia albitarsis I think?
Edited by Robert Heemskerk on 18-05-2007 21:57
Posted by Dieter on 18-05-2007 23:15
#4
Hi,
this character is important for ID of the species group that contains albitarsis and ranunculi. These taxa have a different shape of the last tarsomere of the fore leg. Unfortunately, this is not quite clear on the foto but it seems it is albitarsis. A fully reliable ID requires to check the genitalia.
Regards,
Dieter