Regeneration and the Moulting Cycle in Blattella Germanica L. I. Single Regeneration Initiated During the First Instar

Abstract

The effects of removal of the left metathoracic leg of BlatteUa germanica at the proximal autotomy plane, i.e. between trochanter and femur, are described from operations on animals at known ages in the first instar, at temperatures of 25 and 30°C, 70-80 per cent. R.H. Either a completely differentiated regenerate or an undifferentiated papilla, but never an intermediate, appears at the first moult after operation. Where a papilla is produced the complete regenerate appears at the second moult after operation.