Thread subject: Diptera.info :: Chrysotoxum sp
Posted by tristanba on 18-09-2007 15:40
#1
This from chalk grassland in S UK (Surrey), in early-mid September. Sems too yellow for C. festivum but not really right for C. cautum either? Could it be C. elegans?
BW
Tristan
Edited by tristanba on 18-09-2007 19:32
Posted by amalia_raluca on 18-09-2007 19:16
#2
I don't think that is festivum, because the yellow markings reach the margins of the abdomen. but in my opinion either cautum is: the first antennal segment is as long as 2th. what about octomaculatum?could it be?
Posted by tristanba on 18-09-2007 19:28
#3
yes, that sp is possible, although it was not on a heathland site. C. elegans fits the habitat better (lowland calcareous grassland).
here's another image
Edited by tristanba on 18-09-2007 19:34
Posted by Gerard Pennards on 18-09-2007 20:16
#4
Well, it seems to be a female of elegans or veralli.
Looking at tergite two were the black band on the front seems to be rather straight, I think this is a female Chrysotoxum verralli!
Greetings,
Posted by Iolaire on 18-09-2007 20:24
#5
Hi Tristan,
My first thought was Chrysotoxum fasciolatum, but looking closer I think it's either C. octomaculatum or C. verralli. And I think the latter fits best!
Edit: It seems Gerard has beaten me. But 2 for verralli: That's a comfirmation, I guess?!:D
Edited by Iolaire on 18-09-2007 20:26
Posted by tristanba on 18-09-2007 20:57
#6
I would agree re black band and antennal segments are equal in length. Many thanks Gerrard & Iolaire!
BW
Tristan