
Belongs within: Pycnonotidae.
Ixos is a genus of bulbuls with wispy crests found in southern Asia.
<==Ixos Temmink 1825 [Ixosidae]B94
|--+--I. everettiJT12
| | |--I. e. everettiL03
| | `--I. e. haynaldi (Blasius 1890) [=Criniger haynaldi]L03
| `--I. rufigularisJT12
`--I. siquijorensisJT12
|--I. s. siquijorensisHSS13
|--I. s. cinereicepsHSS13
`--I. s. monticolaHSS13
Ixos incertae sedis:
*I. virescens Temminck 1825B94
I. affinisR02
|--I. a. affinisR02
|--I. a. aureusR02
|--I. a. longirostrisR02
`--I. a. platenaeR02
I. caferE42
I. chalocephalus Temminck 1828B94
I. inornatus Fraser 1843F43
I. leucogenys [=Brachypus leucogenys]V41
I. leucotisE42
I. malaccensisBKB15
I. mcclellandiiBKB15 [=Hemixus macclellandiL03, Hypsipetes mcclellandiiJF06]
|--I. m. mcclellandiiL03
|--‘Hypsipetes’ m. holtiiVP89
|--I. m. peracensis (Hartert & Butler 1898) [=Iole tickelli peracensis]L03
`--I. m. tickelli Blyth 1855L03 [=Hypsipetes tickelliS89; incl. Iole holti binghami Hartert 1902L03]
I. nicobariensisAP21
I. squamatus Temminck 1828B94
*Type species of generic name indicated
References
[AP21] Arlott, N., & B. van Perlo. 2021. Collins Birds of the World. William Collins.
[B94] Bock, W. J. 1994. History and nomenclature of avian family-group names. Bulletin of the American Museum of Natural History 222: 1–281.
[BKB15] Burleigh, J. G., R. T. Kimball & E. L. Braun. 2015. Building the avian tree of life using a large-scale, sparse supermatrix. Molecular Phylogenetics and Evolution 84: 53–63.
[E42] Ewer, W. 1842. List of a collection of birds from India. Proceedings of the Zoological Society of London 10: 91–93.
[F43] Fraser, L. 1843. On a new Rhinolophus, and four new species of birds from western Africa. Proceedings of the Zoological Society of London 11: 25–27.
[HSS13] Hirschfeld, E., A. Swash & R. Still. 2013. The World’s Rarest Birds. Princeton University Press: Princeton (New Jersey).
[JT12] Jetz, W., G. H. Thomas, J. B. Joy, K. Hartmann & A. Ø. Mooers. 2012. The global diversity of birds in space and time. Nature 491: 444–448.
[JF06] Jønsson, K. A., & J. Fjeldså. 2006. A phylogenetic supertree of oscine passerine birds. Zoologica Scripta 35: 149–186.
[L03] LeCroy, M. 2003. Type specimens of birds in the American Museum of Natural History. Part 5. Passeriformes: Alaudidae, Hirundinidae, Motacillidae, Campephagidae, Pycnonotidae, Irenidae, Laniidae, Vangidae, Bombycillidae, Dulidae, Cinclidae, Troglodytidae, and Mimidae. Bulletin of the American Museum of Natural History 278: 1–156.
[R02] Riley, J. 2002. Population sizes and the status of endemic and restricted-range bird species on Sangihe Island, Indonesia. Bird Conservation International 12: 53–78.
[S89] Salvadori, T. 1889. Viaggio di Leonardo Fea nella Birmania e nelle regioni vicine. XIX.—Uccelli raccolti nei Monti Carin a nord-est di Tounghoo, nel Pegù presso Rangoon e Tounghoo e nel Tenasserim presso Malewoon. Annali del Museo Civico di Storia Naturale di Genova, Serie 2a, 7: 369–438.
[V41] Vigne, G. T. 1841. Relating to a collection of birds formed in Thibet and Cashmere. Proceedings of the Zoological Society of London 9: 6–7.
[VP89] Viney, C., & K. Phillipps. 1989. Birds of Hong Kong 5th ed. Government Printer: Hong Kong.