I watched this caterpillar through a macro lens for fifteen minutes. I was amazed how it created two strong parallel bands to drag the leaves to close in to create a hollow space for it to enclose itself!
There is a sweeping movement of the head with the creation of strands . There is a side to side
movement and the strands are created with every movement.
At the end of the creation of these bands the leaves had come closer! I was getting late for work... so I discontinued watching any further. When I cam back home it was already in its 'covered' space.
The video I recorded is most revealing of this process, which is my first experience with macro videography! It is an effort to keep the hand steady.