Gallery Links
Users Online
· Guests Online: 62

· Members Online: 0

· Total Members: 5,028
· Newest Member: mangeley
Forum Threads
Theme Switcher
Switch to:
Last Seen Users
· Reimund Ley< 5 mins
· weia00:06:16
· Auratus00:18:24
· Jan Maca00:27:34
· Volkmar00:43:34
· Pentti Ketola00:51:24
· JWV00:51:31
· pensae01:13:29
· smol01:13:43
· BeJoCo02:01:04
Latest Photo Additions
View Thread
Diptera.info :: Identification queries :: Diptera (adults)
Who is here? 1 guest(s)
 Print Thread
Sylvicola. Species? Two sexes?
Stephen
#1 Print Post
Posted on 01-11-2006 23:02
User Avatar

Member

Location: West Virginia USA
Posts: 1322
Joined: 12.04.05

I photographed the first fly shown here in July. It was attracted to lights. Sylvicola sp. female? On the sex, I am going on the eyes when compared with the other fly on this page.

Location: West Virginia USA, open area but near woodlands.
Stephen attached the following image:


[99.39Kb]
--Stephen

Stephen Cresswell
www.americaninsects.net
 
www.americaninsects.net
Stephen
#2 Print Post
Posted on 01-11-2006 23:04
User Avatar

Member

Location: West Virginia USA
Posts: 1322
Joined: 12.04.05

This is the first of three photos taken on 30 October. They are of two individuals.

Is this the same species as the one above? Another female I think.
Stephen attached the following image:


[67.54Kb]
Edited by Stephen on 01-11-2006 23:53
--Stephen

Stephen Cresswell
www.americaninsects.net
 
www.americaninsects.net
Stephen
#3 Print Post
Posted on 01-11-2006 23:07
User Avatar

Member

Location: West Virginia USA
Posts: 1322
Joined: 12.04.05

Here is a lateral view of an October 30th Sylvicola sp. I think this one is male, but correct me if I am wrong. I will also post a dorsal view of one of these flies with the eyes large and touching.
Stephen attached the following image:


[72.39Kb]
Edited by Stephen on 01-11-2006 23:14
--Stephen

Stephen Cresswell
www.americaninsects.net
 
www.americaninsects.net
Stephen
#4 Print Post
Posted on 01-11-2006 23:47
User Avatar

Member

Location: West Virginia USA
Posts: 1322
Joined: 12.04.05

Okay, here is the one I think is a male, comparing the eyes with the two photos at the top of the page.

So to summarize, the very first image on this page is from July, while all the others are from 30 October.

All Sylvicola sp.? Are they all the same species? And this fourth image, with the eyes close together, is a male, while the two at the top of the page are females? (I think the lateral view is of the same individual as in this fourth photo, and that means the lateral view shows a male.)
Stephen attached the following image:


[89.14Kb]
--Stephen

Stephen Cresswell
www.americaninsects.net
 
www.americaninsects.net
Paul Beuk
#5 Print Post
Posted on 02-11-2006 08:23
User Avatar

Super Administrator

Location: Netherlands
Posts: 19403
Joined: 11.05.04

I think you are right when it comes to the females and males. About species I could not tell. Wing markinghs are similar enough for them to be all the same species but on the other hand, in the Palaearctic we have related species that can only be separated on characters in the genitalia. I have too little knowledge about the Nearctic fauna.
Paul

- - - -

Paul Beuk on https://diptera.info
 
diptera.info
Jump to Forum:
Similar Threads
Thread Forum Replies Last Post
ID possible? Family, Genus, Species? Diptera (adults) 2 11-05-2025 16:22
Hydrotaea species Diptera (adults) 7 11-05-2025 08:20
Syrphus species? Syrphidae 5 18-04-2025 20:47
Chloropidae genus Elachiptera ID species ? Diptera (adults) 4 07-04-2025 08:14
orange-grey diptera species? -> Brachyopa cf. bicolor Diptera (adults) 4 06-04-2025 18:57
Date and time
17 June 2025 12:14
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.

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

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

Render time: 0.74 seconds | 227,256,051 unique visits