Overwintering Pachysphinx modesta pupae

[Citheronia at aol.com]

Hi all,

I was wondering if anyone out there has successfully overwintered pupae of 
Pachysphinx modesta (Big Poplar Sphinx). I've heard from a few people that 
they haven't done it successfully. Last year I was able to overwinter a few 
and have them emerge successfully, but perhaps it was just a fluke. If any of 
you have been successful in overwintering the pupae, please let me and 
several others know how! Perhaps something like a rain or temperature would 
trigger emergence?

Thank you all,
Randy Lyttle
Citheronia at aol.com
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