Description: Deutsch: Verbreitung der francoisi-Gruppe innerhalb der Haubenlanguren (Trachypithecus) Tonkin-Schwarzlangur (T. francoisi) Hatinh-Langur (T. hatinhensis) Delacour-Schwarzlangur (T. delacouri) Cat-Ba-Langur (T. poliocephalus) English: Distribution of the T. francoisi group of Trachypithecus langurs Francois' langur (T. francoisi) Hatinh langur (T. hatinhensis) Delacour's langur (T. delacouri) Cat Ba langur (T. poliocephalus). Date: 23 January 2017. Source: Own work. Author:
Haplochromis.
