Yep.
If you look at a map of Madagascar, you can see all the names.
Nosy means Island, so you will see Nosy Be, Nosy Mitsio, etc are small islands off the mainland, and then Ambilobe, Ankaramy, etc are all regions on the mainland. So a Nosy Be panther isn't a Nosy Be Panther, it's a panther FROM Nosy Be.
For each region, there is a different color morph.