Question - what stimulates larva to pupate?

[gwang]

Hi,

> It is interesting to note that the injection of this hormone into the
> 'mature' larval stages of some hawks moths (just prior larval 'shrinkage'
> and pupation) have been shown to delay the pupation process and induce a
> further 'giant' larval stage.

Are you saying that instead of pupating, the larva would progress to a
further instar?  In which case, just what would be the maximum number of
instars a larva could go through?

Peace,
Xi Wang

 
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