www.photomacrography.net :: View topic - Earwig: Wing Unfolding
www.photomacrography.net Forum Index
An online community dedicated to the practices of photomacrography, close-up and macro photography, and photomicrography.
Photomacrography Front Page Amateurmicrography Front Page
Old Forums/Galleries
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 
Earwig: Wing Unfolding

 
Post new topic   Reply to topic    www.photomacrography.net Forum Index -> Technical and Studio Photography -- Macro and Close-up
View previous topic :: View next topic  
Author Message
NikonUser



Joined: 04 Sep 2008
Posts: 2508
Location: southern New Brunswick, Canada

PostPosted: Mon Sep 28, 2009 9:48 am    Post subject: Earwig: Wing Unfolding Reply with quote

Best description I could come up with; disclaimer - read at your own risk Rolling Eyes
#1: female with forewings (elytra) removed
#2: 1st unfolding; what I'm calling LW (lower part of wing) has been pulled out from beneath the upper part. Very 3-dimensional, looks like an inverted V when vieved from the front with the fold line at top of inversion.
#3: moving the upper part of the wing at right angles to the thorax cause it to partially rotate ventrally, the lower part of the wing now becomes the major part of the dorsal surface. There is another layer of pleated membrane beneath the LW and it unfolds from a ventral hinge H.
The ventral part A rotates outwards at the point where the pin is holding the wing at right angles to the thorax, see #4.
#4: When A rotates outwards the upper part of the wing that had rotated ventrally now rotates back dorsally and the hinge H is now about half way between labels A and C. The pleated wing membrane (B & C in #3) is now greatly expanded.
This image is again 3-dimensional, all the lower part of the membrane below the dotted red line is laying flat and all the part above the red line is almost vertical.
#5: Moving part C (in #3) forward results in the unfolding of more membrane.

D is just for reference

Earwigs must be some sort of contortionists to unfold their wings, and some sort of packing expert to fold them up again.

#5 has been flattened and floated in alcohol onto a microscope slide; accounts for the odd colours






NU09185
_________________
NU.
student of entomology
Quote – Holmes on ‘Entomology’
” I suppose you are an entomologist ? “
” Not quite so ambitious as that, sir. I should like to put my eyes on the individual entitled to that name.
No man can be truly called an entomologist,
sir; the subject is too vast for any single human intelligence to grasp.”
Oliver Wendell Holmes, Sr
The Poet at the Breakfast Table.

Nikon camera, lenses and objectives
Olympus microscope and objectives
Back to top
View user's profile Send private message
Graham46



Joined: 18 Dec 2008
Posts: 132
Location: Harford County, MD

PostPosted: Mon Sep 28, 2009 11:03 am    Post subject: Reply with quote

Amazing work! Looks like a lot of effort went into this, great job.
_________________
Semper cogitatio
Graham
Back to top
View user's profile Send private message
rjlittlefield
Site Admin


Joined: 01 Aug 2006
Posts: 17510
Location: Richland, Washington State, USA

PostPosted: Mon Sep 28, 2009 11:45 am    Post subject: Reply with quote

Amazing work, indeed!

I was hoping that somebody else would do this before I felt compelled to try, because I know how very difficult and time-consuming it is to pull off something like this.

To see the mechanism described and illustrated so clearly is a huge treat for me!

I suspect it will also become a standard reference for years in the future.

Nice, very nice...

--Rik
Back to top
View user's profile Send private message Visit poster's website
Graham Stabler



Joined: 20 Dec 2007
Posts: 209
Location: Swindon, UK

PostPosted: Thu Oct 01, 2009 4:27 am    Post subject: Reply with quote

That's really great stuff, the manipulation would be hard enough without having to record each step so nicely.

I have a paper about this if you are interested, it also has some pretty neat photos but nothing like this.

Graham
Back to top
View user's profile Send private message
NikonUser



Joined: 04 Sep 2008
Posts: 2508
Location: southern New Brunswick, Canada

PostPosted: Thu Oct 01, 2009 6:53 am    Post subject: Reply with quote

If I had known Rik was going to do it I would have held off.

The paper would be an interesting read, nice to know if my description was close to what actually occurs.
_________________
NU.
student of entomology
Quote – Holmes on ‘Entomology’
” I suppose you are an entomologist ? “
” Not quite so ambitious as that, sir. I should like to put my eyes on the individual entitled to that name.
No man can be truly called an entomologist,
sir; the subject is too vast for any single human intelligence to grasp.”
Oliver Wendell Holmes, Sr
The Poet at the Breakfast Table.

Nikon camera, lenses and objectives
Olympus microscope and objectives
Back to top
View user's profile Send private message
lauriek
Site Admin


Joined: 25 Nov 2007
Posts: 2404
Location: South East UK

PostPosted: Thu Oct 01, 2009 8:57 am    Post subject: Reply with quote

Nice work NU!

The only thing missing is a picture of the whole earwig with the wing extended, I don't suppose you have one of those do you? (For proof to the unbelievers that these do in fact have wings!)
_________________
Flickr | www.laurieknight.net | Blog
Back to top
View user's profile Send private message Visit poster's website
Harold Gough



Joined: 09 Mar 2008
Posts: 5787
Location: Reading, Berkshire, England

PostPosted: Thu Oct 01, 2009 8:59 am    Post subject: Reply with quote

Amazing series.

Perhaps they are thigmotropic to avoid having to go through all this! Very Happy

Harold
_________________
My images are a medium for sharing some of my experiences: they are not me.
Back to top
View user's profile Send private message
NikonUser



Joined: 04 Sep 2008
Posts: 2508
Location: southern New Brunswick, Canada

PostPosted: Thu Oct 01, 2009 11:51 am    Post subject: Reply with quote

Graham Stabler wrote:

I have a paper about this if you are interested, it also has some pretty neat photos but nothing like this.
Graham


Graham:
I received your PM and replied positively. However, the message is in my Outbox and I can see no way to send it- it may have been sent but it does not show in the Sent box.

EDIT: Rik say's it went, so deleted my e-mail address.
_________________
NU.
student of entomology
Quote – Holmes on ‘Entomology’
” I suppose you are an entomologist ? “
” Not quite so ambitious as that, sir. I should like to put my eyes on the individual entitled to that name.
No man can be truly called an entomologist,
sir; the subject is too vast for any single human intelligence to grasp.”
Oliver Wendell Holmes, Sr
The Poet at the Breakfast Table.

Nikon camera, lenses and objectives
Olympus microscope and objectives


Last edited by NikonUser on Thu Oct 01, 2009 1:14 pm; edited 1 time in total
Back to top
View user's profile Send private message
rjlittlefield
Site Admin


Joined: 01 Aug 2006
Posts: 17510
Location: Richland, Washington State, USA

PostPosted: Thu Oct 01, 2009 12:36 pm    Post subject: Reply with quote

It's been sent. Messages appear in the sender's Outbox until the recipient reads them. Then on the sender's side, they magically migrate to Sentbox. Think of it as a somewhat bizarre form of read receipt.

--Rik
Back to top
View user's profile Send private message Visit poster's website
Display posts from previous:   
Post new topic   Reply to topic    www.photomacrography.net Forum Index -> Technical and Studio Photography -- Macro and Close-up All times are GMT - 7 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group