Thread subject: Diptera.info :: Two Therevids
Posted by Sundew on 01-07-2010 12:08
#1
Hi,
I'd like to show you two Therevidae species here.
The first one should be
Thereva nobilitata (can I be wrong if I name all the ones with the thick goldbrown hair that way?). I saw several of them here in the middle of June.
#1 shows a copula.
Posted by Sundew on 01-07-2010 12:09
#2
#2 is a male of the same species.
Posted by Sundew on 01-07-2010 12:10
#3
Another species I met near a big lake east of Berlin last weekend. This one I do not know, the white fur is quite nice.
So here is #4:
Posted by Sundew on 01-07-2010 12:12
#4
#5 is some more pics of the same animal.
Many thanks for help, Sundew
Posted by Paul Beuk on 01-07-2010 15:08
#5
Bottom:
Acrosathe annulata.
Posted by Sundew on 01-07-2010 20:12
#6
Fine! And all those brown ones are Thereva nobilitata for sure, no mix-up possible?
Posted by Zeegers on 01-07-2010 20:29
#7
handlirschi is like nobilitata, but not to be expected before middle August.
I'm not sure, but it certainly looks like nobilitata.
Theo
Posted by Paul Beuk on 01-07-2010 20:32
#8
I thought the frontal spots in the female were a bit big for
nobilitata, but I have no key here to check.
Posted by Zeegers on 01-07-2010 21:59
#9
I agree, Paul, but then again clearly not big enough for lanata. And since we cannot see the colouration of the halters and nobilitata is currently very common, I'd only consider another species if it really is not nobiliata.
Theo
Posted by Sundew on 01-07-2010 23:46
#10
Here is another female of that day where the halters are a bit visible. Is that helpful?
Posted by Zeegers on 03-07-2010 12:00
#11
Yes, there are clearly 2 post DC. This is exceptional in nobilitata, though it does occur.
So nobilitata seems unlikely.
We are dying to see the halteres
Theo
Posted by Zeegers on 04-07-2010 21:02
#12
I'm sorry, I was totally off.
It is, of course, Th. fulva, since the dark bands on tergite 2 and 3 are lacking. Should have bee obvious from the first minute !!
Theo