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Walnut Orb Weaver female and Egg Sack


Walnut Orb Weaver female and Egg Sack
Photo Information
Copyright: Robert Brown (Robbrown) Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 1189 W: 90 N: 2161] (6106)
Genre: Animals
Medium: Color
Date Taken: 2006-08-17
Categories: Spiders
Camera: Nikon D200, Sigma 105mm F2.8 DG macro (SOLD), Digital ISO 400
Exposure: f/16, 1/125 seconds
Details: Tripod: Yes (Fill) Flash: Yes
More Photo Info: [view]
Photo Version: Original Version
Date Submitted: 2006-08-17 18:06
Viewed: 10086
Points: 4
[Note Guidelines] Photographer's Note
Well another spider for today's image while not in its usual haunt on the bark of a tree. This fully grown Walnut Orb-Weaver spider (Nuctenea umbratica ) 15mm in body length, is seen here guarding the prospective next generation, she has attached her eggs in a white silk sack on the south facing mesh front to one of my shade tunnels instead of the normal rough tree trunk where they hide in and under cracks and flakes in the bark so it is not a species normally seen in the open. as the name suggests it weaves what most people think of as a spiders web, but instead of sitting in the middle like my Garden cross from yesterday, they attach a cord between the centre of the web and her hiding hole and dash out when prey is caught in it. You may notice that the body is very flattened this is to aid it fitting into the narrow gaps under the bark hidey hole. Later on in the day it poored with rain and i noticed she was not with her eggs, a quick search revealed her hiding down inside a gap where the netting is rolled round a wooden batten to allow it to be nailed to the frame, a good imitation of a crack in tree bark.
Though this seems to be quiet a wide spread species the does not seem to be a lot of detail about its life history, though one interesting fact did come to light, this one of 8 UK species capable of biting back Have a read of this page from the Natural History Museum so handle with care.
A difficult subject to capture for several reasons, 1st this was taken at 15ft+ above ground level , I had to back a truck up-to the tunnel and balance the tripod on some plastic crates to get me level with it.
Then the subject has a great deal of contrast, the egg sack is almost pure white, while the spider is almost black in colour, luckily it was quiet a cloudy dark so the light is was soft, so the whites managed to keep some detail.
Like yesterday I used the the Jessops flash with the white plastic label to bounce the light softly back down onto the subject.
adjustments
Open in PScs
levels
crop to size about 50%
sharpen with usm and fade back in luminosity @ 75%

taba, jcoowanitwong has marked this note useful
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Critiques [Translate]

  • Great 
  • taba Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 473 W: 124 N: 312] (1847)
  • [2006-08-17 20:09]

Hi Robert..
What impressed me at a glance was is the background :)
It gave to the photo a different composition.
good DOF, POV and colours.
well done.
Taba

Hi Robert,
This is a difficult shot that you handled well. Texture on the spider body is clearly seen. Great composition and pov. Very well done.
JC

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