Thread subject: Diptera.info :: Tachinidae Central France Muscid like

Posted by clovis on 01-12-2022 11:36
#1

Hi,

My new difficulty. I am sure subscutellum is big :)

I thought with this "muscid" aspect it would be easy to find a genus, but not really.
My better guess would be Medina, but I can't find it really convincing.
I'd be happy to have another opinion.

Specimen come from a wet pasture, central France.

Apical scutellum hairs are broken (but exist)
post notal bristle bigger than first post alar.
Hairs bare
4 Kts (but one is small, about half the others)
Prostenum hairy
1ad on medial tibia.
Cheeks bare

www.galerie-insecte.org/galerie/image/dos315/big/Macquartia%20profil%20Beaucouze.JPG
clovis : France : Beaucouzé : 49070 : 02/07/2022
Altitude : 20 m - Taille : 6 mm
Réf. : 315890

www.galerie-insecte.org/galerie/image/dos315/big/Macquartia%20profil%20tete%20Beaucouze.JPG
clovis : France : Beaucouzé : 49070 : 02/07/2022
Altitude : 20 m - Taille : 6 mm
Réf. : 315891

www.galerie-insecte.org/galerie/image/dos315/big/Macquartia%20dessus%20Beaucouze%20juillet%202021.JPG
clovis : France : Beaucouzé : 49070 : 02/07/2022
Altitude : 20 m - Taille : 6 mm
Réf. : 315892

Posted by Zeegers on 01-12-2022 12:23
#2

It is, indeed, clearly a Blondeliini.
Gut feeling is male Meigenia.
Check the propleuron for small hairs.
Erect apical scutellars (I know, borken off, but pores can tell often a lot about orientation) would support this as well


Theo

Posted by clovis on 02-12-2022 18:46
#3

Of course, Meigenia!!!!!!
Can't say why I rulled this out. :(
Propleuron is indeed hairy (not easy to see thought). Basing on the apical pores insertions of the scutellar bristles, they must have been angled from 45 to 60°

Following the rest of the key, this is apparently M dorsalis (front not wide, bares eyes, cerci andsurstyli straight and long haired)

Thanks for your help!

Posted by clovis on 02-12-2022 19:13
#4

And a picture in vivo, it is nicer :)

www.galerie-insecte.org/galerie/image/dos315/big/Beaucouze%20juillet%202021%2063.JPG
clovis : France : Beaucouzé : 49070 : 02/07/2021
Altitude : 20 m - Taille : 6 mm
Réf. : 315948

Posted by Zeegers on 02-12-2022 20:31
#5

Definitely Meigenia. Check the genitalia (lateral view)

Theo