Gallery Links
Users Online
· Guests Online: 42

· Members Online: 0

· Total Members: 5,038
· Newest Member: Jerome MARIE
Forum Threads
Theme Switcher
Switch to:
Last Seen Users
· Auratus< 5 mins
· THIONYC< 5 mins
· CedricMondy00:11:38
· Woodmen00:27:14
· BLecaplain00:46:47
· evdb01:09:18
· Moumoule01:12:46
· weia01:49:37
· Volker02:36:19
· Andrew Whitt...03:09:31
Latest Photo Additions
View Thread
Diptera.info :: Family forums :: Syrphidae
Who is here? 1 guest(s)
 Print Thread
Chrysogaster id
chacalou
#1 Print Post
Posted on 19-08-2021 13:23
Member

Location:
Posts: 52
Joined: 04.04.19

I found this chrysogaster monday in a swamp.

I think it could be Chrysogaster coemiteriorum or Chrysogaster virescens. Or Riponensia splendens?

Someone can help me?

Date: 16/08/21
Localisation: Saint Sulpice de Grimbouville (27), France
chacalou attached the following image:


[286.51Kb]
Edited by chacalou on 19-08-2021 13:55
 
Sundew
#2 Print Post
Posted on 28-08-2021 16:18
User Avatar

Member

Location: Berlin and Baden-Württemberg, Germany
Posts: 3917
Joined: 28.07.07

This is tricky indeed! However, I would exclude Riponnensia, because it has dark wing bases and two dust stripes on the thorax (see picture 2 and 3 in https://diptera.i...d_id=22325). In Chrysogaster the abdomen viewed from above has a dull top and T1 dull, whereas the tergites 2-4 have metallic edges, whereas in Riponnensia all tergites have metallic edges - I tend to the former.
There are two species of Chrysogaster with a yellow wing base: C. coemiteriorum and C. basalis (https://books.goo...&hl=de). So C. virescens is no candidate. The face of C. coemiteriorum is very broad, as wide or wider than the width of an eye, which fits your front view picture. C. basalis has a narrower face (smaller than the width of an eye). I think I see also a dusted proepimeron, so I find C. coemiteriorum quite probable.
A bit confusing ist the statement of Falk (https://www.flick...610280227/) that the 3rd antennal segment of C. coemiteriorum ist "usually dark", but the pinned animals of C. coemiteriorum in http://v3.boldsys...xid=384753 have clearly orange antennae.
And a last remark: here (http://lists.nott...01556.html) we read that the correct spelling of the name is C. cemiteriorum without the first "o".
That's what I found out! So I would label your pictures "Chrysogaster cf. cemiteriorum" - perhaps some Syrphidae expert will even delete the "cf.".
Regards, Sundew
 
chacalou
#3 Print Post
Posted on 07-09-2021 13:08
Member

Location:
Posts: 52
Joined: 04.04.19

Thank you very much for this answer.
I'll try to show this specimen to some specialist as soon is possible.

Faithfully,
 
Jump to Forum:
Similar Threads
Thread Forum Replies Last Post
Chrysogaster cf. coemiteriorum Diptera (adults) 3 15-08-2022 03:29
chrysogaster? -> Orthonevra intermedia/stackelbergi Sweden Syrphidae 5 15-05-2022 22:21
Somes issues on this Chrysogaster Syrphidae 1 03-08-2021 08:31
Syrphidae > Chrysogaster solstitialis? Syrphidae 7 02-01-2021 11:38
Help id, please -> Syrphidae, Chrysogaster cf. solstitialis Diptera (adults) 4 22-10-2020 15:02
Date and time
01 July 2025 18:41
Login
Username

Password



Not a member yet?
Click here to register.

Forgotten your password?
Request a new one here.
Temporary email?
Due to fact this site has functionality making use of your email address, any registration using a temporary email address will be rejected.

Paul
Donate
Please, help to make
Diptera.info
possible and enable
further improvements!
Latest Articles
Syrph the Net
Those who want to have access to the Syrph the Net database need to sign the
License Agreement -
Click to Download


Public files of Syrph the Net can be downloaded HERE

Last updated: 25.08.2011
Shoutbox
You must login to post a message.

23.06.25 18:10
If you have some spare money, there is a copy (together with keys to pupae and larvae) for sale by Hermann L. Strack, Loguivy Plougras, France

23.06.25 11:18
Appreciate it, Tony Irwin! I got the hint to use the key next to Langton and Pinder key for females of Chironomidae. So no specific queries, except the keys... I will keep this on my list and hope th

19.06.25 15:33
I have the hard copy book, if you have any specific queries, but I'm not scanning the 500+ pages!

02.06.25 18:26
Anyone has "Chironomidae of the Holarctic region. Keys and diagnoses. Part 3. Adult Males Entomologica Scandinavica Supplement 34"? smolwaarneming@gma
il.com

28.05.25 20:57
I have Russian Coenosia. nikita6510@ya.ru

28.05.25 12:25
Is someone able to share with me "A key to the Russian species of the genus Coenosia"?

08.05.25 18:22
I have

03.05.25 08:35
Does someone has a scan of Nartshuk E.P. 2003. Key to families of Diptera (Insecta) of the fauna of Russian and adjacent countries. Proceedings of the Zoological Institute Vol. 294: 1-252 for me?

10.03.25 18:02
We are looking for a new webmaster https://diptera.in
fo/forum/viewthrea
d.php?thread_id=11
5023&rowstart=20

04.03.25 17:10
Please use the link posted below to remember and honour Paul, if you wish

Render time: 3.17 seconds | 229,769,763 unique visits