Posted by Sundew on 15-07-2022 02:32
#1
Hi,
Here is a nice Tachinid from 8th July, seen in a wood in southwestern Germany, about 20 km west of Stuttgart. With the key
http://www.tachin...chweb.aspx I got to
Carcelia, and the key by Tschorsnig & Herting (
https://www.zobod...1-0170.pdf) made me think of
C. bombylans. How close did I come? Comments are appreciated!
Sundew
Edited by Sundew on 15-07-2022 15:51
Posted by Zeegers on 15-07-2022 11:11
#3
Tibiae are dark (?), so should be Senometopia.
Difficult genus
Theo
Posted by Sundew on 15-07-2022 15:49
#4
I get your point. In Moschweb, I lost the option for
Senometopia when I clicked on "apical setae crossed and tilted upwards by 30-60°" because I had estimated the angle to the abdomen to be about 45°. But if you measure in extension of the scutellum slope, it is smaller.
Tschorsnig & Herting 1994 separate the genera according to the presence or absence of a strong ventral bristle on T2. I cannot detect such a bristle, even though I do not have a very suitable view.
So let's assume
Senometopia, the fly also looks very similar to the one you have identified for
https://insektari...topia-spp/. Since it has 4 postsutural dc, T&S 94 says "tibiae yellow, somewhat blackened on its ventral side basally and apically", and this colouration matches quite well. (With dark tibiae, there should be only 3 postsutural dc.)
The combination of characters
- fore tibia with
one posterior bristle
- pubescence of tergites 3 and 4
dense and even,
without discal bristles
- pruinosity
yellowish
- lateral longitudinal black stripe of the thorax behind the suture goes
up to the last dc and does not or hardly become narrower towards the rear
leads to
S. intermedia, that would be another rare species I would have met.
I will archive the pictures under "
S. cf.
intermedia". Thank you very much!