Thread subject: Diptera.info :: Sarcophagidae or Tachinidae (northern France)=> Sarcophagidae

Posted by clovis on 24-11-2022 16:13
#1
Hi,

Here is a specimen I'm not sure about the family.

To me, this big subscutellum should make it a Tachinidae, but I can't make it fit in any genus (and with those longs hairs on arista, I believe it should be easy!)
So maybe I am wrong and it is a Sarcophagidae?

This specimen has two post ia
Prosternum hairy
3 post dc,
R1 hairy
from radio cubital node, hairy till halfway to rm.
Eyes bare

(Lateral view of the head gives a strange impression of hairs on the face. It is same individu)

Caught in the dunes.

www.galerie-insecte.org/galerie/image/dos315/big/Sarco.JPG
clovis : France : Groffliers : 62600 : 09/05/2022
Altitude : 9 m - Taille : 6 mm
Réf. : 315684

www.galerie-insecte.org/galerie/image/dos315/big/Sarco2.JPG
clovis : France : Groffliers : 62600 : 09/05/2022
Altitude : 9 m - Taille : 6 mm
Réf. : 315685

www.galerie-insecte.org/galerie/image/dos315/big/Sarco%203.JPG
clovis : France : Groffliers : 62600 : 09/05/2022
Altitude : 9 m - Taille : 6 mm
Réf. : 315683

www.galerie-insecte.org/galerie/image/dos315/big/Sarco%20antennes.JPG
clovis : France : Groffliers : 62600 : 09/05/2022
Altitude : 9 m - Taille : 6 mm
Réf. : 315682

www.galerie-insecte.org/galerie/image/dos315/big/Sarco5.JPG
clovis : France : Groffliers : 62600 : 09/05/2022
Altitude : 10 m - Taille : 6 mm
Réf. : 315691
Edited by clovis on 01-12-2022 11:36

Posted by Zeegers on 24-11-2022 18:46
#2
Very few Tachinds have paraficial bristles, a clear key pointing towards Sarcs. The ‘big postscutellum’ you mentioned is not the postscutellum, but the structure below it. The postscutellum is actually narrow.

Theo

Posted by clovis on 24-11-2022 20:01
#3
Aaaah, I now have the explanation! Sarcophagidae was my intuition, but couldn't find how to objectify it!
I didn't know that some structure could imitate the postscutellum, I'll have to be carefull.

A family I know almost nothing about, I'll keep this specimen for a day I'll get to it.
For now, I have to finish all my Tachinidae of the year!

Thanks for the help Wink
Edited by clovis on 24-11-2022 20:02

Posted by Zeegers on 25-11-2022 19:29
#4
Take a Dinera, Tachina or other laege Tachinidae and study the postscutellum and the strucure below it. Then restudy this Sarc and you will reach enlightenment Smile

Theo

Posted by clovis on 30-11-2022 11:35
#5
You are right, it is now quite clear! Grin

Posted by Zeegers on 30-11-2022 12:26
#6
“If I was wrong, don’t you think I’d know it ? “

( Sheldon, Big Bang Theory)


Posted by clovis on 01-12-2022 11:26
#7
I did not expect Sheldon to be quoted on this forum^^

I had to catch a Sarcophagidae once to understand this subscutellum thing! Now i'm sure I won't miss any Calliphoridae hidden in my Tachinidae to Id!