Thread subject: Diptera.info :: Asilidae bluish gray, red apex, black and orange legs => Cerdistus cf. erythrurus

Posted by bobabar on 22-08-2022 08:34
#1
Hello everybody!

This supposed Asilidae resembles Neoitamus cyanurus. But the red color of the apex is surprising. Even if it was illuminated by outside light, there was not a strong sun, and the photo on the right of the montage was taken with a flash, 3 or 4 cm from the beast.

www.galerie-insecte.org/galerie/image/dos308/big/P195034550r1k.JPG
Bobabar : France : Cergy : 95000 : 10/08/2022
Altitude : 85 m - Taille : Lc = 9, 5 mm (mesurée)
Réf. : 308958
www.galerie-insecte.org/galerie/image/dos308/big/P1310245r1k.JPG
Bobabar : France : Cergy : 95000 : 10/08/2022
Altitude : 85 m - Taille : Lc = 9, 5 mm (mesurée)
Réf. : 308957

Bobabar, Cergy, 25 kms North-West of Paris, France
Edited by bobabar on 31-08-2022 14:42

Posted by Chris Cohen on 22-08-2022 19:57
#2
Not Neoitamus, but rather Neomochtherus/Aneomochtherus or related

Posted by bobabar on 23-08-2022 09:49
#3
Thanks you Chris ! Smile

A colleague thinks of the genus Cerdistus. What do you think of this proposal?

Posted by Chris Cohen on 23-08-2022 16:51
#4
Cerdistus is related to Neomochtherus and allies, so that is possible. I'm not entirely sure how to separate those genera to be honest.

Posted by bobabar on 29-08-2022 08:25
#5
Thanks Chris! Smile
It's a bit the same answer that my colleague gave me, asking for the genitalia to study them. But I did not capture the beast.

Posted by Quaedfliegh on 30-08-2022 01:47
#6
It is a Cerdistus cf erythrurus. The separation of Cerdistus is rather artificial but mostly they are small and have more DC than Aneomochtherus or Neomochtherus. Antennae always black. Somehow the separation feels "good" :-) At least I recognise them easily....

Posted by bobabar on 31-08-2022 14:21
#7
Thanks you Reinoud ! Smile

THe last link is broken.
I think that the new link for Diptera is now :
https://nev.nl/secties/vliegen-en-muggen/