Pattern re-establishment--transplantation and regeneration of the leg in the cricket Teleogryllus commodus (Walker).

Regeneration and grafting experiments were carried out on the prothoracic leg of the cricket Teleogryllus commodus (Walker) to examine the precision with which surface cuticular structures and internal epidermal derivatives are reformed. By comparing regenerated and grafted limbs with normal limbs it was found that the three-dimensional structure of epidermal derivatives is not restored. This is despite the fact that regenerated and grafted limbs appear similar in their external morphology to normal limbs. The implication of these results are discussed in the context of theories of pattern formation.