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Bird dropping Spider

25/2/2017

 
On the Banksia Trail I recently noticed a group of weird egg sacs on a twig with a line of silk that led to a strange lump. Unfortunately the bit with the lump broke off during examination. As the lump remains solid despite the process I suspected that it was a zombie spider,which had been killed by a fungus and took it home for examination. 
It was in fact, a very live but atypical  Bird–dropping Spider Celaenia dubia.
This spider is a master of disguise, which hides all day and hunts at night without a web.
At night it suspends itself on a web strand with its claws outstretched and emits a female moth pheromone. Male moths drawn to the scent are grabbed and consumed. Here is a female spider guarding her egg sac 
Picture
Female guarding her eggs
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Brown ball-like egg
As each egg sac contains up to 200 eggs there were over 1000 potential spiderlings.
Check out the bent legs that enable the spider to keep them tightly against its body and the beak-like projection on the front of its carapace (top of front half) containing the slightly raised central four eyes (typical of the Orb weaver family in which it belongs) that enables it to see out when hunched up. They are no danger to humans.
Picture
Long front legs for grabbing moths
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Lumpy mottled abdomen
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Legs adapted for folding up camouflage
Picture
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    Doug Sawkins is a friend of Foxes Lair 

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