Varanus albigularis subspecies question

[Pirarucu]

Recently I saw a classifieds ad selling "Varanus albigularis capiensis", a subspecies I had never heard of before. Looking at the pictures, they look identical to the V. a. albigularis I've seen. Was a new subspecies named, was albigularis reclassified as capiensis, or vice versa? Can anyone clarify for me what the deal is here? Google searches haven't come up with any answers.