The two tailed spiders are called so because their rear spinnerets are longer than usual, and appearΒ like tails. Spinnerets are the organs with which the spiders spin their silk. In the picture below, you can see the tail pair of spinnerets kept together in its rear. Legs, except the third pair, are very long and slender and have banded colors.

two tailed spider hersilia svignyi, kottayam kerala

These spiders are masters of camouflage. Their body coloring is usually brownish, matching with the dry barks, and they change their color according to the surface they are resting on (like these crab spiders). Apart from this, they have a thin flat abdomen, and they lie sticking to the bark as if a part of it. This one, of the hersilia svignyi species, was resting on our garden palm tree, and I found it accidentally, probably when it moved. This particular species is common along South India/Asia.

two tailed spider hersilia svignyi, kottayam kerala

The two tailed spiders hunt insects which come close to them. The species shown here hunts by throwing the silk on their prey, and running around it depositing the silk, confining the prey.

two tailed spider hersilia svignyi, kottayam kerala

They are harmless, you see πŸ˜‰ When disturbed, the spider moves to the opposite side of the tree.

Date: 13 Oct 2007
Location: @ home, Kottayam, Kerala, India
Camera: Nikon D80 + Tamron SP AF90mm f/2.8 Di Macro Lens

Reference:
1. B. J. Kaston, 1965: Some Little Known Aspects of Spider Behavior, American Midland Naturalist, 73, 2, 336-356.
2. Department of Zoology, Sacred Heart College, Cochin, Kerala [southindianspiders.com]

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