8
   

Roger's Spider Stronghold is now open!

 
 
tsarstepan
 
  1  
Reply Thu 8 Nov, 2018 12:36 pm
@tsarstepan,
0 Replies
 
coluber2001
 
  1  
Reply Tue 8 Jan, 2019 01:44 pm
"For several years, I have been observing the odd behavior of the Mirror Spider (Thwaitesia sp.) where the "silver-plates" on the abdomen seem to shrink when the spider is agitated (or perhaps threatened), revealing the actual abdomen. At rest, the silver plates expand and the spaces between the plates close up to become an almost uniform reflective surface. That is why I called it the Mirror Spider. Note that what I am posting are just field observations and not based on scientific literature."
Nicky Bay

https://farm8.staticflickr.com/7398/9293887606_665163bf72_z.jpg
Mirror comb-footed spider (Thwaitesia sp.)
A female Mirror Spider (Thwaitesia sp.) when on the move. Note that the silver plates on the abdomen are relatively small and spotty. Although I'm using the term "silver plates", they could actually be guanine crystals.


https://farm9.staticflickr.com/8567/16000233223_3b0aae0c6a_z.jpg
Mirror spider (Thwaitesia sp.)
When it stops to rest, the silver plates appear to expand, filling up the abdominal surface slowly.


https://farm3.staticflickr.com/2877/9291105005_426aa7b617_z.jpg
Mirror comb-footed spider (Thwaitesia sp.)
After an hour, the silver plates expanded to fill almost the entire abdomen!


https://farm6.staticflickr.com/5512/9291105085_56cf17d6ea_z.jpg
Mirror comb-footed spider. (Thwaitesia sp.)
From above, the spider looks like an art work of stained glass!
farmerman
 
  1  
Reply Tue 8 Jan, 2019 01:59 pm
@coluber2001,
where is that mirror comb spider found?
tsarstepan
 
  1  
Reply Tue 8 Jan, 2019 02:08 pm
@farmerman,
farmerman wrote:

where is that mirror comb spider found?

Weirdly enough? The bathroom ... always staring into the vanity mirror at itself.
0 Replies
 
coluber2001
 
  1  
Reply Tue 8 Jan, 2019 02:19 pm
@farmerman,
They're found in Australia, but this particular spider was filmed in Singapore, so they might be pretty widespread in Asia. They're quite small from 3 to 4 mm.

There's not much information about their natural history, such as, why a mirrored abdomen would be beneficial.

I've seen species of Argyrodes in Texas, kleptoparasitic spiders with silvery abdomens that live in the orb webs of larger spiders like Argiope spp. and stealing food. And I really don't understand why the abdomens would be so bright.

https://upload.wikimedia.org/wikipedia/commons/thumb/7/7e/Argyrodes.bonadea.female.-.tanikawa.jpg/250px-Argyrodes.bonadea.female.-.tanikawa.jpg
tsarstepan
 
  1  
Reply Wed 16 Jan, 2019 08:05 am
@coluber2001,
tsarstepan
 
  1  
Reply Thu 17 Jan, 2019 06:43 am
@tsarstepan,
Source
https://i.imgur.com/gh2BQyo.jpg
0 Replies
 
coluber2001
 
  1  
Reply Thu 14 Feb, 2019 11:35 pm
Australian wrap-around spider
Dolophones spp.
Interesting Australian spider with a concave underside that allows it to flatten itself, conform to the substrate and hide from predators.


http://www.elitereaders.com/wp-content/uploads/2016/04/wrap-around-spider-7.jpg?x90792

http://www.elitereaders.com/wp-content/uploads/2016/04/wrap-around-spider-feat-image.jpg
roger
 
  1  
Reply Fri 15 Feb, 2019 01:30 am
@coluber2001,
That's neat.
tsarstepan
 
  1  
Reply Sat 16 Mar, 2019 06:50 pm
@roger,
0 Replies
 
Region Philbis
 
  3  
Reply Sun 13 Oct, 2019 08:55 am

0 Replies
 
 

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