Comparative studies of highly repeated DNA from different species of Indriidae (Primates, Strepsirhini) allowed confirmation of the specific status of Avahi occidentalis, A. laniger and Propithecus tattersalli. The comparison of their band patterns revealed the existence of specific and common bands from which a cladogram of the family is inferred. This cladogram shows that Avahi clade is the sister-group of Indri and Propithecus clade, and that P. verreauxi is related to P. diadema. These results were discussed in view of those obtained from cytogenetic, morphological and molecular data (mitochondrial DNA). This study shows the capacity of the repeated sequence pattern comparison to be used as a tool for confirming taxa status, (taxinomic classification is a primary determinant of management priorities for endangered species, neglect of distinct taxa may lead to their extinction), and for inferring phylogenetic relationships among related species.Une etude comparative de l'ADN hautement repete des differentes especes d'Indriidae (Primates, Strepsirhini) a permis de confirmer le statut specifique d'Avahi occidentalis, A. laniger et Propithecus tattersalli. La comparaison des differents profils d'hybridation revele l'existence de bandes specifiques et de bandes communes qui ont permis de proposer une phylogenie de cette famille. Cette phylogenie montre le genre Avahi comme groupe frere du clade (Indri, Propithecus). Par ailleurs, P. verreauxi et P. diadema forment le clade frere de P. tattersalli. Ces resultats ont ete confrontes a ceux obtenus a partir des donnees cytogenetiques, morphologiques et de biologie moleculaire (ADN mitochondrial). Cette etude montre la pertinence de l'utilisation de la comparaison des profils d'ADN repete pour confirmer les categories taxinomiques, etape prealable indispensable a la conservation des especes menacees, et les differentes relations phylogenetiques parmi des especes apparentees.