Gallery Links
Users Online
· Guests Online: 30

· Members Online: 0

· Total Members: 5,024
· Newest Member: Mariem
Forum Threads
Theme Switcher
Switch to:
Last Seen Users
· evdb00:49:32
· smol00:55:19
· Andrzej01:00:11
· weia01:13:04
· Huxicat2101:18:48
· libor01:22:05
· Jan Maca01:55:39
· Juergen Peters01:59:42
· Volker02:01:14
· lgarriga03:02:51
Latest Photo Additions
View Thread
Diptera.info :: Identification queries :: Diptera (adults)
Who is here? 1 guest(s)
 Print Thread
Geomyza
Nikita Vikhrev
#1 Print Post
Posted on 24-07-2007 11:29
User Avatar

Member

Location: Moscow, Russia
Posts: 9423
Joined: 24.05.05

Kursk region, 20 July, step/
Could it be ID till species?
Nikita Vikhrev attached the following image:


[81.24Kb]
Nikita Vikhrev - Zool Museum of Moscow University
 
Louis Boumans
#2 Print Post
Posted on 24-07-2007 11:52
Member

Location: NO Oslo
Posts: 262
Joined: 09.06.04

Hoi Nikita,

I have a copy of drake 1991 Review of British Opomyzidae with a key. In this key there are only 2 with darkened crossveins: O. tripunctata and O. majuscula. I dont think it's tripunctata so it may be majuscula. The characters are not easy to see in this picture:

- tripunctata: 'usually' distinct spot in base of wing, anepimeron with one strong seta in addition to 1-2 weak setae; female sternite 8 entire
- majuscula: no distinct spot at base, anepimeron with 3-5 setulae only, female sternite 8 divided medially

But of course there could be more and other species in Russia.
 
Jan Willem
#3 Print Post
Posted on 24-07-2007 12:46
User Avatar

Member

Location: Waalwijk, The Netherlands
Posts: 2149
Joined: 24.07.04

Hi Nikita and Louis,

This is indeed not Geomyza tripunctata, nor G. majuscula. But these two species are not the only two species with 2 darkened crossveins. Other species with 2 darkened crossveins are G. annae, G. balachowskyi, G. hackmani, G. martineki, and G. nartshukae.
The specimen of Nikita looks most like a female of G. hackmani. To make sure, you should have a look at sternite 8 (in most cases retracted). On the enclosed picture you see sternite 8 of the following species: 2) G. annae; 3) G. balachowskyi; 4) G. hackmani; 5) G. martineki.

Jan Willem
Jan Willem attached the following image:


[32.15Kb]
Edited by Jan Willem on 24-07-2007 12:47
 
Nikita Vikhrev
#4 Print Post
Posted on 24-07-2007 13:03
User Avatar

Member

Location: Moscow, Russia
Posts: 9423
Joined: 24.05.05

Thank you Louis and Jan.
Jan, I think that north step near Kursk is new region for you (it is strange, but nobody worked in Kursk region, the nearest place with some information about Diptera is Voronezh with with examined fauna of Dolichpodidae (Negrobov) and some knowledge about other families).
25-26 May - no Opomyzidae collected
20-21 July - this fly, 2 G.tripunctata and a hell lot of O.florum - either oak forest and step on shadow places.
I think it will be more wise to send you specimen on this post for sure ID (along with Turkish material from last winter ect...)
Nikita
Nikita Vikhrev - Zool Museum of Moscow University
 
Jan Willem
#5 Print Post
Posted on 24-07-2007 21:40
User Avatar

Member

Location: Waalwijk, The Netherlands
Posts: 2149
Joined: 24.07.04

Hi Nikita,

Nikita wrote:
I think it will be more wise to send you specimen on this post for sure ID (along with Turkish material from last winter ect...)


You're welcome to do so. I will do my best to identify the material.

Jan Willem
 
Jump to Forum:
Similar Threads
Thread Forum Replies Last Post
Geomyza? => Geomyza ?acutipennis Diptera (adults) 8 17-04-2025 14:55
Geomyza sp Diptera (adults) 3 29-07-2024 20:43
Opomyzidae - asking for ID -> female Geomyza subnigra Diptera (adults) 4 11-07-2024 14:41
Geomyza sp.? --> G. nartshukae/tripunctata, female Diptera (adults) 4 03-06-2024 22:58
Geomyza cf martineki says Jan Willem Diptera (adults) 4 04-12-2023 16:19
Date and time
13 May 2025 23:13
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.

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

04.03.25 17:09
I propose in respect to him not to post on trivial matters until his cremation, March 8th

04.03.25 17:08
For those unaware: Paul, the owner, past away two days ago. https://diptera.in
fo/forum/viewthrea
d.php?thread_id=11
5023

19.12.24 12:33
Received missing pages from @royensoc.co.uk, free download available for a few days: https://we.tl/t-vk
a2lFLsYU

17.12.24 23:03
Downloaded the British Handbook Diptera: Bibionid and Scatopsidae flies but pages 58, 59, 67, 68 are missing. Anybody has a complete copy?

08.11.24 16:10
Www.abebooks.com

29.07.24 13:19
Don't suppose anyone knows anwhere selling a copy of Contributions to a Manual of Palaearctic Diptera 2? Always wanted a copy.... Smile

Render time: 0.70 seconds | 222,752,506 unique visits