Posted by amaira on 30-04-2021 13:33
#1
From Lasiocampa quercus larvae collected last summer in southern Sweden, and stored outdoors, these flies came out this April. To me it is Ceromya bicolor.
I have received 3 flies sent to me, and none of them have subapical scutellar bristles convergent!
But what else can it be?
5 mm
The anal vein does not reach the wing margin.
Lower st shorter than the antenior.
The r4+5 vein with bristles continue more than half the way further from r-m to the wing edge.
Sorry for bad Pictures.
Edited by amaira on 02-05-2021 09:22
Posted by Zeegers on 30-04-2021 13:37
#3
Yes, I agree. The subapicals might have been distorted while pinning.
it seems to be a female, if so: the large last tarsomere of front leg is distinctive for female bicolor.
Theo
Posted by Zeegers on 30-04-2021 14:36
#5
Fifth segment much longer (nearly twice) as fourth. Looks good to me.
Theo
Posted by Zeegers on 30-04-2021 20:13
#7
By the way, your host is classic for this species.
Theo