You're quite right about Araujia sericifera being another alternative food.    From Wordnik.com.  [Museum Blogs] Reference

I did a little digging online and found Araujia sericifera is listed in the National Pest Plant Accord (NPPA) Manual and as such "is banned from sale, propogation and distribution.".    From Wordnik.com.  [Museum Blogs] Reference

Araujia hortorum.    From Wordnik.com.  [Late, Late at Night] Reference