Talking about localities and BCI, BCC, BCL, and BCO it is really easy to break this stuff down.....
BCO = argentine boas
BCL = Peruvian long tail
BCI = Sonoran (mexican boas the species furthest north) all the way south to columbian boas
BCC = South of Columbia
It also seems to an extent (true alot but not always for example the largest boa locality is Peruvian, and Argentina is further south but the BCO is smaller than Peruvian) the further south you go the larger the boas are
Dont let all the locality stuff beat you up its really not as difficult as it seems.
I just want to ask one kind favor of you... I know you are only talking about one boa, but it is an addiction that I know I cant get away from.. If you choose to breed PLEASE DO NOT CROSS BREED ANY THING TO BCO OR BCL LOCALITIES.... I do not care much about cross breeding bci localities it is done so much anyway and producing morphs it is understandable, crossing bci to bcc I do not like but understand it happens and it becomes more acceptable when things like roswell boas come out of those crosses... But bcl is something special and should be left alone in my oppenion.... and BCO is such a magical beautiful animal that was pushed to the verge of extinction and there are amazing pure BCO morphs (t+ and motley) that look amazing it would be a travesty to cross breed and mutt this species of boa up........