Thread subject: Diptera.info :: Lauxaniidae? -> likely

Posted by CedricMondy on 30-05-2022 10:20
#1

Hi everyone,

This one found in town seems a bit odd to me. I first though it could be a Sapromyzosoma but...

It might be possible that the thorax was damaged during the capture (although I did not notice) but even so, the chaetotaxy seems weird to me.

Any idea?


www.galerie-insecte.org/galerie/image/dos303/big/photos_20220423133151%203.jpg
Cédric Mondy : France : Saint-Maur-des-Fossés : 94100 : 23/04/2022
Altitude : 41 m - Taille : 4.5 mm
Réf. : 303283

www.galerie-insecte.org/galerie/image/dos303/big/photos_20220423133151%201.jpg
Cédric Mondy : France : Saint-Maur-des-Fossés : 94100 : 23/04/2022
Altitude : 41 m - Taille : 4.5 mm
Réf. : 303284

www.galerie-insecte.org/galerie/image/dos303/big/photos_20220423133151%202.jpg
Cédric Mondy : France : Saint-Maur-des-Fossés : 94100 : 23/04/2022
Altitude : 41 m - Taille : 4.5 mm
Réf. : 303286

Edited by CedricMondy on 12-06-2022 23:16

Posted by CedricMondy on 02-06-2022 23:00
#2

Do you think the family at least is correct?

Posted by CedricMondy on 05-06-2022 21:18
#3

Anyone inspired by this one?

Posted by Jan Maca on 06-06-2022 06:19
#4

The costal vein does not seem to be broken... Still, I would compare Chamaemyiidae.

Posted by Roger Thomason on 06-06-2022 06:32
#5

I'm sure Jan meant Chyromyidae...A bit early in the morning for this ... :)

Posted by CedricMondy on 06-06-2022 11:45
#6

Thank you both! I will have a look at these families, and more specifically the second one.

Posted by CedricMondy on 06-06-2022 14:28
#7

I checked for Chyromyidae, but it seems this does not match. Indeed, in 'The European Families of the Diptera', Pjotr Oosterbroek says that this family is characterized by yellow (here black) bristles and hairs and by the lack of dorsal preapical bristle on the tibiae (here they are present). These specifics are also mentionned by John Carr in this forum.
Species from Chamaemyiidae are usually silvery grey flies (not exactly the case here) and they also lack preapical bristles on the tibiae.

I will keep searching, thanks in advance for any hint!

Posted by Jan Maca on 06-06-2022 15:39
#8

Thank you for your note, Roger - it was exactly so. Unfortunately, Chyromyidae do not seem to match, then what? Still a lauxaniid?

Posted by John Carr on 06-06-2022 17:39
#9

I see no intra-alar bristle so it is not in the Minettia group. Some Sapromyza and Sapromyzosoma have two strong katepisternals and spots on the distal tergites.

Posted by Roger Thomason on 06-06-2022 17:41
#10

It might be bits and pieces of several different flies cobbled together by Frank Enstein after he's had a few drinks. Or it might be a good idea to run a Geiger Counter across it [just in case] :D


Posted by CedricMondy on 09-06-2022 08:38
#11

Thank you all!

Edited by CedricMondy on 09-06-2022 12:19