According to the paper, the boas on Black Mountain, Imperial County are L. orcutti because they’ve got haplotype C21 (part of lineage A).
I’m not sure what to say about “looking” more like L. trivirgata than the B11 haplotypes in the Otay/TJ river watersheds. Morphological work sounds like it’s messy and there may not be a 1:1 correspondence between morphology and species limits as they’re currently described.