Thread subject: Diptera.info :: Phasia theodori?

Posted by clovis on 16-04-2021 22:20
#1

Dear all,

Second Tachinid question for tonight:
Here is a small specimen I identified as a Phasia following Central europe key.
From side of Loire (ending of the Layon river, for those who are interested in Diptera and vine :)), wet area.
Several specimens, I also caught a female (and I have picture in vivo of her)

I totally dont get the first point of the Phasia key, so I followed both.
Ibelieve it could be P theodori as:
-halteres are yellow
-hairs on peristome are totally white
-S7 of female appear similar to the figure given.

My little doubt are from the wing of male: It has is centraly black tinged (not greatly visible on this picture I am afraid).
And wing is mention to be unspotted. So I am wrong?

I apologize for quality of pictures, specimen is really small!
www.galerie-insecte.org/galerie/image/dos279/big/IMG_7101.JPG
clovis : France : Chalonnes-sur-Loire : 49290 : 10/10/2020
Altitude : 12 m - Taille : 6 mm
Réf. : 279635

www.galerie-insecte.org/galerie/image/dos279/big/Chalonne%20sur%20loire%20octobre%202020%201.JPG
clovis : France : Chalonnes-sur-Loire : 49290 : 10/10/2020
Altitude : 12 m - Taille : 6 mm
Réf. : 279636

www.galerie-insecte.org/galerie/image/dos279/big/Chalonne%20sur%20loire%20octobre%202020%202.JPG
clovis : France : Chalonnes-sur-Loire : 49290 : 10/10/2020
Altitude : 12 m - Taille : 6 mm
Réf. : 279638

Posted by Zeegers on 17-04-2021 15:57
#2

As you noticed, wing colouration is off, moreover, it is too big.
Are you sure it is Phasia and not Ectophasia ? When Phasia, obesa is the first species to check. Female genitalia are highly distinctive in Phasia.

Theo

Edited by Zeegers on 17-04-2021 15:57

Posted by clovis on 02-05-2021 17:21
#3

Your right, this is Phasia obesa...
In the mean time I caught a P pusilla: I now understand the "hairs on parafacial" critera!
many thanks for putting me in right direction!