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View Thread :: Identification queries :: Diptera (adults)
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Yellow Tachinid - Carcelia? Better Senometopia.
#1 Print Post
Posted on 15-07-2022 03:32
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Location: Berlin and Baden-Württemberg, Germany
Posts: 3799
Joined: 28.07.07

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 attached the following image:

Edited by Sundew on 15-07-2022 16:51
#2 Print Post
Posted on 15-07-2022 03:32
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Location: Berlin and Baden-Württemberg, Germany
Posts: 3799
Joined: 28.07.07

Some more details.
Sundew attached the following image:

#3 Print Post
Posted on 15-07-2022 12:11

Location: Soest, NL
Posts: 17479
Joined: 21.07.04

Tibiae are dark (?), so should be Senometopia.

Difficult genus

#4 Print Post
Posted on 15-07-2022 16:49
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Location: Berlin and Baden-Württemberg, Germany
Posts: 3799
Joined: 28.07.07

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!
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Date and time
02 October 2022 14:30


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