Activity of ventromedial neurosecretory neurons of the subesophageal ganglion (type A) in Morimus funereus Muls. during metamorphosis

matic alterations in external appearance and behavioral repertoire. This developmental process occurs by a combination of programmed cell death, cell proliferation and differentiation, and remodeling of old structures for new functions, along with major morphogenetic shifts (R i d d i f o r d , 1985). The given processes are under the control of neurohormones and hormones mainly belonging to the ecdysteroid class (B o l l e n b a c h e r et al. 1981; B o l l e n b a c h e r , 1988).