Thread subject: Diptera.info :: Platycheirus

Posted by varganimrod on 25-04-2023 18:43
#1
Hello! I found this one in Hungary a few days ago. I think that this is a Melanostoma dubium. But I’m absolutely not sure in this, I can’t exclude Platycheirus species.. Could you help me please?
Edited by varganimrod on 29-04-2023 19:08

Posted by varganimrod on 25-04-2023 18:43
#2
2

Posted by varganimrod on 25-04-2023 18:44
#3
3

Posted by varganimrod on 25-04-2023 18:44
#4
4

Posted by Juergen Peters on 25-04-2023 21:22
#5
Platycheirus albimanus group.

Posted by Karsten Thomsen on 25-04-2023 21:44
#6
No, this is Platycheirus ambiguus, male.

Posted by varganimrod on 26-04-2023 06:31
#7
Thank you! And why isn’t dubium? What is the main difference between them?

Posted by JWV on 26-04-2023 09:28
#8
Hi,

Melanostoma dubium is a synonym of Melanostoma certum, and as far as I know a montane species. Furthermore, Melanostoma species always have yellow markings on the abdomen, unless of course they are melanistic, but then they wouldn't show these greyish dusted spots.
This is indeed a male P. ambiguus, easliy recognized by the "bloated" dusted face and the unmodified foretibia and -tarsi.

Best, Jonne

Posted by Karsten Thomsen on 29-04-2023 14:03
#9
If you agree with the ID comments, you should edit the title bar.

Posted by varganimrod on 29-04-2023 19:08
#10
Ok.