>>The name cribo is also used for other snakes like clelia and spilotes and dialectically, is pronounce in several ways. The spelling "CRIBO" is OUR way of phrasing the word's sound from a given area, not the other way round.
That's true, but in the U.S. Clelia ssp. goes by the common name "Mussurana", and Spilotes pulatus goes by the common name "Tiger Rat Snake". The common name Cribo (or any of it's variants) is used to describe Drymarchon ssp. found south of the U.S./Mexico border except, of course, for D.c.erebennus which is also found in northern Mexico. When we are speaking of the animals in question, it is impractical to go through all of the possible colloquial spellings and pronunciations in order to make sure that you have covered every use of "Cribo" or "Creabo" for every dialect that may use the word for something.
If we were in one of those countries south of the border, then it would be necessary to find out what common names are in use in that area. Since we are in the U.S. and I've never heard anyone in the U.S. call a Mussurana or Tiger Rat Snake a Cribo, then I think it's relatively safe to assume that if you hear the word Cribo being used to describe a snake, the speaker is referrring to some species or subspecies of Drymarchon.
The question was not about the origin of the word or the uses and variants of the word in other countries, but the normal pronunciation of that particular variant (assuming the speaker is in the U.S.). But, that's the problem with common names. You are forced to make some assumptions. A "Chicken Snake" can be a lot of different things depending upon where it is found. It can be a member of the genus Pantherophis (Gen. nov.) formerly Elaphe in the U.S., or it can be Spilotes pulatus in Central American countries...and presumably other things in other areas. The use of "scientific" names eliminates this confusion, even if you only use the species name or the trinomial for the subspecies. For instance, if the subject of conversation is generally about Drymarchon and someone mentions erebennus then there is no question of what the speaker is referring to.
-----
We do not inherit the Earth from our ancestors; we borrow it from our children. Ralph Waldo Emerson