A molecular phylogeny of the genus Psittacula sensu lato (Aves: Psittaciformes: Psittacidae: Psittacula, Psittinus, Tanygnathus, † Mascarinus) with taxonomic implications Author Braun, Michael P. Author Datzmann, Thomas Author Arndt, Thomas Author Reinschmidt, Matthias Author Schnitker, Heinz Author Bahr, Norbert Author Sauer-Gürth, Hedwig Author Wink, Michael text Zootaxa 2019 2019-03-04 4563 3 547 562 journal article 28130 10.11646/zootaxa.4563.3.8 3d7c8af3-a377-4564-a87d-d5569030d5e2 1175-5326 2601472 3AD8034B-4872-4B01-991B-440A74C2DFF4 Tanygnathus Wagler Type species: Tanygnathus macrorhynchus Wagler = Psittacus megalorynchos Boddaert Morphology/distribution: no red shoulder patch; medium to large size; very large bills; medium sized, rounded tails; sexual dimorphism weak or absent; yellow edging on wing coverts; black lore and blue crown only in T. gramineus , otherwise predominantly green head, red upper and lower mandible, juveniles duller. Distribution only on islands of the Philippines and Wallacea. The genus Tanygnathus clusters within the former genus Psittacula with high support values. Tanygnathus forms a clade with Psittacula s.s. and Belocercus . Its morphological characters (bill size, tail length and shape, no sexual dimorphism in two of the four species) apparently evolved quite quickly away from the general pattern in Psittacula . The monophyletic clade of T. megalorynchos and T. sumatranus clusters together with Psittinus , Belocercus longicauda , and the Psittacula s.s. clade in our dataset..