Posted by Sundew on 21-11-2024 03:15
#4
I know the comprehensive paper by Krzemińska. It covers all 59 European species whereas Peeters & Oosterbroek deal only with the 9 species occurring in the Be-Ne-Lux countries. I learn from Krzemińska that in France there are also 9 species, but three of them (
forcipula, lutea, dahlae) are missing in Peeters & Oosterbroek. On the other hand, Krzemińska mentions three more species with infuscated r-m (
gigantea, muelleri, hiemalis) that, however, seem not to occur in France. So the three French species missing in Peeters & Oosterbroek would not show this feature. Krzemińska does not emphasize infuscated wing veins in
T. annulata, but mentions that they may occur in some specimens. So
annulata is still not off the table. I tried to brighten your last photo with photoshop but cannot estimate the colouring of the abdomen. As shown in
https://diptera.i..._id=108782, the banding can be rather inconspicuous. And here my wits end. I am not an expert of Nematocera, and they say that in nearly all cases a safe ID is only based on genital characters and ID-ing from a photo is very bold... Compare also the discussion in
https://diptera.i..._id=108781 where ambiguities could not be resolved. I missed the thread
https://diptera.i..._id=111678 that shows a good
annulata in my opinion, the quality of the pictures is nice. But, as already written above, in your case I do not dare to go further than "cf.
regelationis".
Regards, Sundew
Edited by Sundew on 21-11-2024 03:18