You asked..."Are C.Sternfeldi and Rudis the same?"...here's some information on them...
http://adcham.com/html/taxonomy/species/chrudis.html
There's a little bit in this site too...
http://www.adcham.com/html/taxonomy/articles/bitaeniatusrevision.html
And some pictures and other information...
http://www.chamresearch.com/index.php?set_albumName=album01&option=com_gallery&Itemid=29&include=view_album.php
http://www.chamresearch.com/index2.php?option=content&task=view&id=6&pop=1&page=0
http://72.14.203.104/search?q=cache:t6nPBd6-rzYJ:www.gli.cas.cz/seh/files/tanzie2002.pdf chamaeleo AND "rudis sternfeldi"&hl=en&gl=ca&ct=clnk&cd=5&lr=lang_en
You will have to use the "find in this page" option or scan down for it in this last one.
Hope this helps! Glad to hear they are doing well! They are not easy to raise to adulthood.