Belocercus S. Müller

Type species: Psittacus barbatulatus Bechstein = Psittacus longicauda Boddaert

Morphology/distribution: no red shoulder patch; medium size, very long tail; male with black lores, horizontal black beard stripe, green crown and rose-coloured cheeks, not encircling hindneck; upper mandible red, lower mandible brown; females duller with completely dark-brown bill and shorter tail. Distribution: Malay Peninsula to Borneo and Sumatra.

Several subspecies exist within the B. longicauda complex, and further investigation is required to resolve the evolutionary history and taxonomy of Belocercus, which shares a common ancestor with Psittacula s.s. Based on its unclear phylogenetic position, with low support values, and morphological differences from this clade, however, we regard it as a separate genus.