Fig. 4.

SEMs of the third instar larvae of L. sericata following 24 h post treatment with 32 % concentration of camphor oil. a SEM of whole larva shows cuticular damage with loss of spines at the ventral surface (inset i, head arrow), distortion of the sensorial structures (inset ii) and slight degeneration of the anterior spiracle (inset iii). (b) SEM of the anterior end of larva shows deformed and wrinkled cuticular surface. c SEM of the posterior end of larva shows broken cuticle. DS dorsal surface, VS ventral surface