First instar larva boring into leaf surface, head on left

Head on left

Third instar larvae, showing different colour forms,
head on left

Fourth instar larvae, showing different colour forms,
head on left

Final instar larvae, showing different colour forms,
head on left

Pupa a few days after pupation,
in this case grey-brown in colour

Grey-brown pupa has turned brown near the end of its pupation period.

Different coloured pupae