Posted by blowave on 28-12-2010 17:37
#9
Stefan Naglis wrote:
Looks like Chrysotus sp.
Thanks for the suggestion Stefan. I've looked at the genus ID criteria for Chrysotus, one part seems to fit which is the pale halters.
40. Stylus apical or subapical; halters usually light, white or yellow ... Chrysotus
The next step in the key however mentions also for Chrysotus:
41. Postpedicel higher than long; postpedicel not triangular; stylus more or less apical ... Chrysotus
The postpedicel on this fly doesn't look to be higher than long to me, but do the two need to be taken together or can they be taken separately?
I was wondering if this could be another
Syntormon, there could be a thumb-like pedicel. I have pics of one from 2009 but a week earlier which is more green, from a dorsal view it looks similar and the wings seem to be the same (not sure about the diverging M vein) it appears to have a thumb-like pedicel but the legs are paler.
However, without checking the wings for which defines Rhaphium, I decided on that originally because of the body being a "metallic bronze green" I need to check the wing detail, OK, R4+5 does not look to be divergent, M1+2 does not diverge but there is a kink in it further up so I'm not sure if that is for vein towards the wing tip. I guess it means it is divergent so ruling out Rhapium, and I can't see if there's an A2. The frons colour probably also rules out Rhaphium.
Does anyone else have any thoughts? I will post the other fly from last year separately, they are better pics.