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Collected in southern France near Montpellier, in a garrigue environment, in June 2020.
I did not succeed keying out something that makes sense... It shares features with Trachysiphonella, but it does not look like the species supposed to be in France.

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Side view.

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There seems to be a carina somewhat developed between the antennae.

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Wing

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It is a rather dark specimen but seems to be Trachysiphonella scutellata nonetheless. Also see the specimens on this page: https://v3.boldsy...xid=469884.

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Thanks a lot.
I am a bit confused. In my previous post on Trachysiphonella, you mentioned that scutellata has more than one dark spot on the pleura, like here. However, in the following paper there is a picture of Trachysiphonella ruficeps and it has three dark spots, and it looks alike my specimens (at least the light one):
https://nph.onlinelibrary.wiley.com/doi/full/10.1111/nph.13210
Are there other features that I could investigate to distinguish the two species?

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I see your point. Let's wait for Michael von Tschirnhaus. ;)

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I now have inspected many specimens (from traps) of Trachysiphonella, and the differences between the specimen of the present post and the specimen of this post: https://diptera.info/forum/viewthread.php?forum_id=5&thread_id=99207
appear to be consistent. They are most likely two distinct species. If someone knows about a detailed description of the two western European species (T. scutellata and T. ruficeps), let me know, so that I can figure out which is which.
Thanks

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Chloropidae, Oscinellinae: Trachysiphonella spec. This specimen has very deep gena(e) (jowl(s)). Genae of T. ruficeps and R. scutellata normally are narrower (but variable in both species). The dark spots on the pleuron are not species-specific. All species are very variable concerning their body colour. T. scutellata normally has two lateral setae on each side of the scutellum, T. ruficeps only one. On average T. ruficeps is the smaller species. Without studying the male genitalia an identification is not trustable. On Sardinia I collected also T. pori which may also occur in France and which can easily be identified by its much narrower and longer male cerci. Further species in Saudi Arabia, Asia, South Africa ...