Posted by ChrisR on 23-05-2006 23:07
#6
Well-spotted Theo, I was lazy and just going on the "look and feel" of the fly with it's slightly yellow-brown dusting on the abdomen, which is common in
bombylans and currently we seem to get more
bombylans reported than any other
Carcelia species.
With a dark basicosta it has to be one of:
tibialis,
lucorum,
gnava or
atricosta but the latter 2 are incredibly rare here. Working on Belshaw's key (which we are currently updating with a few more species - work in progress) I think I can see discal bristles on tergite 4 and 1 antero-dorsal bristle on the mid tibia, which would suggest it is
tibialis. It's still a bit hit & miss without the specimen to examine closely, but it's as close as you'll probably get I think B)
With a specimen it would be more straightforward and if it was a male we'd be able to use the very good features of the male genitalia. I'd say
Carcelia are not really as bad as
Siphona to identify, and there are worse genera (like
Thelaira, which is currently under revision) ... but they're certainly not easy from a photo :)
Edited by ChrisR on 23-05-2006 23:14