Sphinx istar & Sphinx separata

[James and Margaret Tuttle]

I am amazed at the way the larvae of Sphinx istar and Sphinx separata
make such different use of the same larval hostplant. As a result, I am
looking for study sites of which I am not aware. If you have taken
adults of both species on the same night AND at the same site, I would
be very interested in the data. Thanks for the assistance in advance.

Regrads,

Jim Tuttle