Thread subject: Diptera.info :: Chrysotoxum sp

Posted by tristanba on 03-09-2007 21:37
#1
This from N London recently, is it C. arcuatum?

All help much appreciated Wink

Best wishes
Tristan
Edited by tristanba on 03-09-2007 21:38

Posted by tristanba on 03-09-2007 21:39
#2
second image:

Posted by Iolaire on 04-09-2007 11:11
#3
Hi Tristan,

Chrysotoxum for sure. I'm fairly positive it's C. festivum though. Considering that the yellow stripes on the abdomen don't reach the side (almost), and the completely yellow tarses.

C. arcautum has a broader abdomen and the stripes don't match. But I'm saying this as an enthousiastic amature; I'm no expert!Wink

Good luck!

Iolaire
Edited by Iolaire on 04-09-2007 11:12

Posted by conopid on 04-09-2007 18:51
#4
Hi Tristan,
It's certainly not arcuatum, which has more yellow and is a dumpier looking fly. It's most likely to be C festivum, which is generally one of the commoner Chrysotoxum's in the UK.

Posted by tristanba on 04-09-2007 21:55
#5
Many thanks Iolaire & Ngel. Cheers, Tristan