Nannopsittaca

The Nannopsittaca genus includes two small green parrotlets: 

The Manu Parrotlet is also known as Amazonian Parrotlet as it is native to the western Amazon basin from southern Peru to nortwest Bolivia, where it inhabits lowland forrests.

The Tepui Parrotlet is native to Brazil, Venezuela and Guyana, where it inhabits subtropical or tropical lowland and montane forrests.