Hasora badra, the common awl, is a butterfly belonging to the family Hesperiidae, which is found in India. Wikipedia
The young caterpillar constructs its first leaf shelter by bringing two halves of a small young leaf together with silk threads. It rests within the flap and ventures out to eat on nearby leaf surface. In later instars, the Common Awl caterpillars also construct leaf shelters in a similar fashion but do so with larger and older leaves.
Source: Butterfly Cycle
Please check this video, how the caterpillar construct the leaf using silk thread.
