Gallery Links
Users Online
· Guests Online: 15

· Members Online: 1
Nosferatumyia

· Total Members: 3,876
· Newest Member: Paul Venter
Paul Beuk's Book Reviews
Newest books:
· The European fami...
· De Nederlandse zw...
· The Diptera of th...
Most popular books:
· The Diptera of th...
· De Nederlandse zw...
· The European fami...

Looking for something in particular?
Use search!
Forum Threads
Theme Switcher
Switch to:
Last Seen Users
· NosferatumyiaOnline
· Juergen Peters00:11:37
· evdb00:29:47
· piros00:38:46
· tlegrand00:49:13
· johnes8100:49:38
· rafalk01:13:12
· Bert Oving01:32:58
· libor01:47:15
· binturong01:51:30
Latest Photo Additions
View Thread
Diptera.info :: Identification queries :: Diptera (adults)
Who is here? 1 guest(s)
 Print Thread
distinct sexual dimorphism
mwkozlowski
#1 Print Post
Posted on 13-11-2017 08:12
User Avatar

Member

Location: Warsaw, Poland
Posts: 663
Joined: 17.10.06

this, probably, Calliphoridae pair was photographed in May 2007, Warsaw. Posiible ID?
mwkozlowski attached the following image:


[185.7Kb]
very general entomologist
 
mwkozlowski
#2 Print Post
Posted on 14-11-2017 10:02
User Avatar

Member

Location: Warsaw, Poland
Posts: 663
Joined: 17.10.06

sodomy?
very general entomologist
 
johnes81
#3 Print Post
Posted on 14-11-2017 12:01
User Avatar

Member

Location: Berlin, Germany
Posts: 702
Joined: 15.10.16

very interesting photo indeed. I think that Calliphoridae is correct but I don't recognize the species. I haven't met every genus and species. Did you collect these? do you have other photos? I cannot see enough details to even identify a genus. I think that Calliphora is not possible based upon the wing alone. Onesia also have reddish-gold hairs at the back of the head but it doesn't look like an Onesia. Any other angles will help.

Since you are from Poland, you could try to ask Krzysztof Szpila from Katedra Ekologii i Biogeografii. He may be able to recognize the species and better explain what you are seeing.
John and Nini
 
johnes81
#4 Print Post
Posted on 14-11-2017 12:17
User Avatar

Member

Location: Berlin, Germany
Posts: 702
Joined: 15.10.16

I see that you have posted a similar photo in the past:
https://diptera.info/forum/viewthread.php?thread_id=29897

I am not an expert but it is known that size of flies can vary based upon availability of food. For example, Pollenia rudis can measure between 6 and 10mm. If a 10mm male meets a 6mm female, then you have a strange photo. Perhaps this is a case of a smaller female meeting a larger male.
John and Nini
 
mwkozlowski
#5 Print Post
Posted on 14-11-2017 18:11
User Avatar

Member

Location: Warsaw, Poland
Posts: 663
Joined: 17.10.06

Yes indeed. This entrance had no response, and I returned to it after I had gone through my archives. You suggest natural selection behind this sticking dimorphism. So, could it be that a female was such bigger than a male in an option?
very general entomologist
 
Ben Hamers
#6 Print Post
Posted on 14-11-2017 20:07
Member

Location: Heerlen ( Holland )
Posts: 490
Joined: 16.12.04

Females can be bigger too indeed.
Here are two examples.

Ben
Ben Hamers attached the following image:


[85.55Kb]
Edited by Ben Hamers on 14-11-2017 20:10
 
www.tephritidae.net
Ben Hamers
#7 Print Post
Posted on 14-11-2017 20:11
Member

Location: Heerlen ( Holland )
Posts: 490
Joined: 16.12.04

Another one.
Ben Hamers attached the following image:


[95.55Kb]
 
www.tephritidae.net
johnes81
#8 Print Post
Posted on 15-11-2017 18:45
User Avatar

Member

Location: Berlin, Germany
Posts: 702
Joined: 15.10.16

Beautiful posts Ben. Excellent photos to illustrate a point. Smile
John and Nini
 
mwkozlowski
#9 Print Post
Posted on 15-11-2017 20:12
User Avatar

Member

Location: Warsaw, Poland
Posts: 663
Joined: 17.10.06

nice!!!
very general entomologist
 
Jump to Forum:
Similar Threads
Thread Forum Replies Last Post
Which female with distinct markings? --> Otites formosa (Ulidiidae) Diptera (adults) 5 01-02-2017 14:32
Distinct Ceratopogonidae, Hungary, May Diptera (adults) 5 08-02-2015 20:36
Unidentifiable, but distinct Diptera (adults) 2 14-11-2012 14:11
very high dimorphism in a copulating calli Diptera (adults) 1 11-05-2010 08:08
A distinct Limoniidae, Hungary Diptera (adults) 3 28-06-2009 18:16
Date and time
25 November 2017 12:16
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.

20.11.17 15:09
Pls sign to help save Botanophila fonsecai https://home.38deg
rees.org.uk/?s=Fon
seca. Thx

17.11.17 14:22
Thanks Paul, interesting point

16.11.17 13:44
'Holding' might not be the perfect description. Apparently the armature makes contact with sensitive places on the female, coaxing her to agree to mate.

16.11.17 13:43
Is was not quite sure whether the word would apply correctly, but, yes, that is okay.

15.11.17 11:29
How about armature, would that fit? based on http://onlinelibra
ry.wiley.com/doi/1
0.1111/j.1365-3113
.2008.00422.x/pdf
it would seem that these spines etc are used to hold the female!

14.11.17 09:22
All spines, ridges, lobes, etc. on the femur.

14.11.17 08:36
I think bewaffnung is like weapons (on femur 1).

13.11.17 13:10
Hello can any1 tell me how to translate bewaffnung des femur 1? Thx

26.10.17 13:37
Yes it looks like a typo error e instead of a Thanks you

26.10.17 09:54

Render time: 2.04 seconds | 130,065,529 unique visits