Considering the present situation of research about the Northwest Amazon social organisation, this paper proposes a way of understanding how relations based on patrilineal descent and alliance are articullated and spatially organised among the Tuyuka uf upper Tiquié River (Uaupés basin). The model drawed is fundamented on distinctions between two forms of local groups, that constitute a regional nexus with center and periphery. This model allows the understanding of a uaupesian social system with areas where predominate values based on agnatism, commom language and exogamy, and how these areas are inter-connectec.
Tuyuka indians; Tuyuka indians; Tiquié river; Tiquié river
