What specific color variation morph found in the captive trade for the Kenyan Sand Boa is characterized by a lack of red pigment?

Anerythristic morph

In the captive trade, breeders of the Kenyan Sand Boa have focused on selecting for specific visual presentations, often resulting in distinct morphs that differ from the standard wild coloration of browns, tans, and oranges. One specifically named variation relates to pigment deficiency. The term anerythristic describes a genetic variable wherein the snake lacks red pigmentation entirely. While natural coloration serves the fundamental purpose of camouflage within arid or semi-arid habitats, these selective breeding efforts produce striking visual differences, such as the absence of red tones, making these specific genetic expressions highly desirable among keepers who focus on these visual traits.