Ah. Some have suggested BCA but a careful observer can see that it clearly is not. That is BCA or what are called BCA regardless of the actual scale counts have that particular characteristic that separates them from most other Boas. The South Brazilian amarali I have produced, came from the Lloyd Lemke Brazilians. That's where they all came from. So far as I am aware, the animals we are working with all came from breeding Lloyd. The first breeding was in about 1991 then he produced another very small litter in around 1996 or so. Be that as it may. Here is the scoop on these Boas.
Brazilian amarali's tail pattern basically stops at the vent rarely reaching up into the rest of the pattern of the animal. Saddles to the vent are the general rule. There has unfortunately been some crossing with other stuff that do not follow this exactly, and those animals sometimes have the extended tail patterns. But the Brazilian amarali that have not been crossed have tail blotches on the tail only and saddles to the vent.
Here are some Brazilian amarali that I have produced that are direct descendants of a pair that Lloyd Lemke sold to Jim Pomaville. Jim traded them to me. I sold them to Robert Flanery who bred and produced my parents and most of the founding stock that anyone has today, who has Brazilian amarali.
South Brazilians:







They also tend to have long slender heads.
The animal I posted has a very short fat head unlike Brazilians. Her color is not reminiscent of the ground color of most Brazilians but more like that of Colombians. The Boa I posted clearly has crossbars that resemble tail blotches extending up the body well beyond the vent, not saddles. Then they just disappear not showing themselves again till you see a couple very thin straight across saddles. Also this animal is at least five years of age which would place her birth well before Barry Miller sold any of his Brazilians with this kind of aberrancy. Anyone purchasing one of these animals would know exactly what they had as well. I haven't sold any of my aberrant South Brazilians. Judging by her head size and her general appearance, I suspect that she is likely older than ten years of age actually. She has that aged look about her skin, head and tail.

The other dead give away is the head. Brazilians ALWAYS have a well defined head pattern. You will notice in the Brazilians with completely missing bare backs still have the bold well defined stripe on the head. This one does not. She also has a somewhat diminished "mustache". You can see the slight cloudiness to her eyes as well. She just shed the day before I took these pictures too. Just another indicator that she is likely an older animal.

Be all that as it may, what she exhibits may or may not prove to be genetic. Time will tell that or not if we are fortunate to be successful in getting her to reproduce.
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Jeff Ronne Sr
The Boaphile
Director USARK

Originator of Boaphile Plastics
The Boaphile Boa Site