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Diptera.info :: Family forums :: Syrphidae
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is it perhaps Chrysotoxum festivum? => confirmed
Siegfried Rudolf
#1 Print Post
Posted on 09-07-2022 09:53
Member

Location: D / Staufen im Breisgau
Posts: 311
Joined: 23.03.21

Hello, everyone,

I photographed this hoverfly on July 6th in D, BW, Southern Black Forest (980 m). I estimate the size at 12 to 13 mm. Can you identify it?

Greetings Siggi
Siegfried Rudolf attached the following image:


[166.03Kb]
Edited by Siegfried Rudolf on 09-07-2022 13:51
 
Siegfried Rudolf
#2 Print Post
Posted on 09-07-2022 09:53
Member

Location: D / Staufen im Breisgau
Posts: 311
Joined: 23.03.21

picture 2
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[172.04Kb]
 
Siegfried Rudolf
#3 Print Post
Posted on 09-07-2022 09:54
Member

Location: D / Staufen im Breisgau
Posts: 311
Joined: 23.03.21

picture 3
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[148.69Kb]
 
eklans
#4 Print Post
Posted on 09-07-2022 10:37
Member

Location: Franconia, Germany
Posts: 3526
Joined: 11.11.18

Hi Siggi, I think it's C. vernale:
thin yellow bands on tergites
antennae: segment 3 < 1+2
femora: base of 1 & 2 black? if not: C. festivum
(Fotogids Zweefvliegen, André Schulten)
Greetings, Eric Kloeckner
 
Siegfried Rudolf
#5 Print Post
Posted on 09-07-2022 12:19
Member

Location: D / Staufen im Breisgau
Posts: 311
Joined: 23.03.21

Hi Eric,

thank you for your explanation. The picture is bad, I know. But you can still see that the femora aren't really black at the base. When I look at pictures of C. vernale, the base of the femora is clearly black. I think, in this case there is probably no certain determination.

Greetings Siggi
Siegfried Rudolf attached the following image:


[158.84Kb]
 
eklans
#6 Print Post
Posted on 09-07-2022 12:36
Member

Location: Franconia, Germany
Posts: 3526
Joined: 11.11.18

Hello Siggi, you are right: C. festivum!
Greetings, Eric Kloeckner
 
Siegfried Rudolf
#7 Print Post
Posted on 09-07-2022 13:48
Member

Location: D / Staufen im Breisgau
Posts: 311
Joined: 23.03.21

Hi Eric,

thank you very much.

Greetings Siggi
 
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