Tuskes and Paul have defined three main strategies of cocoon placement, although these are not strictly confined to specific species [15]. Cocoons could be suspended from twigs on the host plant by a silk attachment called the peduncle, attach their full length along branches or other supporting substrates, or construct the cocoon among leaves from the host plant without attachment to twigs. Their results show that the construction strategies depend on both the silkworm species and the environments. Danks describes silkworm cocoons in terms of relative size, robustness, structure, structure and composition of cocoon wall, shape, colour, attachment, and orientation, and tries to relate them to these properties to the biological functions of the cocoon [16].