This naturally occurring morph is unique and very rare in collections. The beauty of the lavender color mixed with those baby blue eyes is unparalleled in the reptile hobby. The Anerythristic Pioneertown Rosy or "Anery Pietown" for short is special for two reasons. First, the Anery phenotype originated from captive specimens rather than found/collected in the wild. Second, it is a locality pure line that is also a simple recessive genetic "morph." 

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In 1993 Ralph Crouch sold Mitch Allen an F1 pair of neonate wild type (normal looking) Pioneertown, CA locality Rosy Boas.  Ralph Crouch shared that he personally collected the parents in Pioneertown, CA.  Mitch Allen bred them and produced an F2 litter of three (3) in 1999. In that litter was an Anerythristic looking male. Mitch Allen bred the parents for two more years and was not able to produce any more Anery offspring so the parents were sold to a local pet shop.  

 

In 2004 Mitch Allen was able to prove out the gene as simple recessive by breeding the male Anery to its sibling female. That F3 litter had two (2) more Anery babies in it thus officially making this visual trait (Anery) "proven." Cautious and intentional care has been taken since then to ensure this locality/trait combo stayed pure.  

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At this time (2019) the genetic compatibility for phenotype expression with other Anerythristic or Axanthic genes in the Rosy Boa captive population has not been confirmed. 

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Source:

Goldbarg, M., (2014)  www.rosyboamorphs.wixsite.com [Accessed 6/24/2019]