I know what you're getting at, but with this Amphilophus complex you're trying to shut the gate after the horse has bolted (and galloped 50 miles down the road and been hit by a truck). Try find a true Amphilophus citrinellus or labiatus anywhere, I doubt if there is any in NZ fullstop, about the only way to be sure it is an actual species is to buy from someone like Jeff Rapps who has collected them from a known location. And even then its not really 100% as those who study the genus aren't all sure themselves as the two species vary greatly over their range.
The fact is that the two (or more, depending on how it ends up split/lumped) species have been freely crossed by people for countless generations, the safest bet is to call any fish know from a known source/location simply Amphilophus Sp. or midas/devil mix as Jack has done and enjoy them for the awesome fish they are.
Here's some more reading for you;
http://www.monsterfishkeepers.com/forums/showthread.php?439705-A-cf-citrinellus-A-potential-case-of-F1-Midevils
http://www.monsterfishkeepers.com/forums/showthread.php?367826-Please-read-before-asking-if-you-have-a-Midas-or-Red-Devil
And here's a pic of one of my old "mutts" from Jack, fantastic fish, just starting to go thru his second colour change into the mottles red/white look.