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Possible Ground Crab Spider - new image added

 
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NikonUser



Joined: 04 Sep 2008
Posts: 2530
Location: southern New Brunswick, Canada

PostPosted: Sat Oct 11, 2008 12:44 pm    Post subject: Possible Ground Crab Spider - new image added Reply with quote

Desperate times when a dedicated insect photographer has to resort to photographing spiders (yikes!), due to lack of insects.




Possibly a Ground Crab Spider Xysticus sp.
body length: 6mm; posed
Top image is crop of lower image
44 exposures @ 0.2mm, HF 4.1
MF 105mm Micro Nikkor f/8 at full extension + 115mm extension.

EDIT: title changed
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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.

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Last edited by NikonUser on Fri Nov 21, 2008 12:30 pm; edited 2 times in total
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rjlittlefield
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Joined: 01 Aug 2006
Posts: 18239
Location: Richland, Washington State, USA

PostPosted: Sat Oct 11, 2008 1:00 pm    Post subject: Reply with quote

Lovely images!

Crab spider, 44 frames... Dead, cold, anesthetized, or just very accommodating?

--Rik
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Cyclops



Joined: 05 Aug 2006
Posts: 2968
Location: North East of England

PostPosted: Sat Oct 11, 2008 2:30 pm    Post subject: Reply with quote

Very nice NU,I do like spiders!
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beetleman



Joined: 04 Aug 2006
Posts: 3578
Location: Southern New Hampshire USA

PostPosted: Sat Oct 11, 2008 3:19 pm    Post subject: Reply with quote

Could you have found one a little prettier. Rolling Eyes
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NikonUser



Joined: 04 Sep 2008
Posts: 2530
Location: southern New Brunswick, Canada

PostPosted: Sat Oct 11, 2008 4:34 pm    Post subject: Reply with quote

beetleman wrote:
Could you have found one a little prettier. Rolling Eyes


That's an oxymoron I've never heard before.

Rik: alive, but a little hung over from sniffing ethyl acetate.
_________________
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
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lauriek
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Joined: 25 Nov 2007
Posts: 2404
Location: South East UK

PostPosted: Sun Oct 12, 2008 3:57 pm    Post subject: Reply with quote

Really nice shots!

Where can you buy ethyl acetate, do you need an entymology supplies specialist or would a pharmacy have such a thing?

I don't think Ken will like these, it's a mean looking beastie! And of course the DOF trick from stacking makes it look bigger than it actually is! Smile
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NikonUser



Joined: 04 Sep 2008
Posts: 2530
Location: southern New Brunswick, Canada

PostPosted: Sun Oct 12, 2008 4:22 pm    Post subject: Reply with quote

lauriek wrote:

Where can you buy ethyl acetate


Anglian Lepidopterist Supplies has it Cat# DS28 HERE
Chemists should sell it
Could try Nail Polish Remover, or even Nail Polish = some form of plastic sometimes dissolved in Ethyl Acetate.
_________________
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
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remy



Joined: 29 Sep 2008
Posts: 7
Location: Spain

PostPosted: Tue Oct 14, 2008 10:57 am    Post subject: Reply with quote

Teriffic shot! Excellent light and detail esp on the second frame.
Remus
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tpe



Joined: 26 Aug 2007
Posts: 467
Location: Copenhagen Denmark

PostPosted: Sat Oct 18, 2008 3:54 am    Post subject: Reply with quote

Really excelent, and amazingly well posed. So does ethyl acetate not make the insects muscles contract? I have been freezing my samples but the muscle contraction always make the posing very difficult.

tim
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NikonUser



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

PostPosted: Sun Oct 19, 2008 6:37 pm    Post subject: Reply with quote

Tim: As you point out, freezing leaves insect muscles in a locked contracted state. Such insects have to be 'relaxed' to be able to pose the legs etc. Means keeping them in a humid (100% RH) for about 24h at room temp. Lots of info on the WEB, just Google "Butterfly Relaxing".
When used at a very low conc., Ethyl Acetate will leave an insect/spider in a perfectly relaxed state. I use a 1lb butter container and about 1 drop of Ethyl Acetate from a standard eye-dropper-type pipette. About 30mins to send the bug to sleep, about 6 hrs or overnight to kill a bug. High concs, will kill a bug quickly but will leave the bug with rigid contracted muscles that need to be relaxed - sometimes they will never relax.
_________________
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
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View user's profile Send private message
NikonUser



Joined: 04 Sep 2008
Posts: 2530
Location: southern New Brunswick, Canada

PostPosted: Fri Nov 21, 2008 12:29 pm    Post subject: Reply with quote

Sorting my hard drive, found another stacked image of this spider: 17 frames @0.2mm.


_________________
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
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View user's profile Send private message
Tom Stack



Joined: 10 Aug 2008
Posts: 61
Location: Florida Keys, USA

PostPosted: Wed Nov 26, 2008 4:28 pm    Post subject: Reply with quote

Beautiful photo, the cropped image on the top is amazing! Gotta love that 105 Nikkor!

Tom
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