The specimen I just got is from the Colombian Orinoco. I'm currently working on getting more detailed collection data. She's got quite bold patterning!
The Orinoco is one of the longest rivers in South America at 2,140 km. Its drainage basin, sometimes called the Orinoquia, covers 880,000 square kilometres, with 76.3% of it in Venezuela and the remainder in Colombia
You more then likely have a VZ. The most "usual" variant.