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Can anyone tell me what kind of insect (if it is one) is this...!! Or is it the pupa of some insect? enter image description here

Well I don't think that the whole big thing is the insect itself, it appears to be just a kind of protection or shelter which moves along with the tiny little thing that keeps on popping out and going it so as to move.

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Can you give some more details? Where is it found and so on? Do you have a better image? This one is hardly usable for identification. –  Chris Mar 17 at 10:07
    
Well I am in India and I found it on the wall of my room and it's new to me so I don't have more information. As for the image, I do have one more but whenever I try to zoom in it gets blurred... So sorry for that! –  Shefali Mar 17 at 10:11
    
@Chris : does this make a difference, I just replaced the image? –  Shefali Mar 17 at 10:16
    
It is a bit better, but not much. Is this some kind of a caterpillar with some kind of a hull? –  Chris Mar 17 at 11:12
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This is mostly a guess and loose suggestion, since the picture is not very clear (would need to see the larvae in more detail). However, Bagworm moths (Psychidae), Case moths (Coleophoridae) and Caddisfly larvae (Trichoptera, almost exclusively aquatic) all build similar cases. They construct their cases out if silk and often include debris, pebbles and other materials. I wouldn't be surprised if the larvae in your picture belongs to one of the first two taxa. Bagworm moths and Caddisflies generally include lots of external materials in their larval cases, which could point to Case moths for your specimen (which seems to have a weaker case mostly made of silk).

Here are two pictures of first a UK Case moth larvae (Coleophora deauratella) followed by a Bagworm moth (Dahlica triquetrella), just as comparisons. If you do google image searches of "group name + larvae" you will see many examples of what they can look like. enter image description here enter image description here

And just as a cool example - the larvae often use random material lying around to build their cases, which can give the following result, if caddisfly larvae are bred in a tank containing pieces if gold and pearls. For further information see this link.

enter image description here

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thanks. This is quite informative. –  Shefali Mar 26 at 10:00
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