Hemixos
{{Short description|Genus of birds}}
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{{original research|date=June 2011}}
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{{Automatic Taxobox
| image = Long Unseen Friend 3199619413.jpg
| image_caption = Chestnut bulbul (H. castanonotus)
| taxon = Hemixos
| authority = Blyth, 1845
| range_map = Hemixos distribution map.png
| type_species = Hemixos flavala{{cite web |url= https://www.aviansystematics.org/4th-edition-checklist?viewfamilies=166 |title= Pycnonotidae |author= |date= |website= aviansystematics.org |publisher= The Trust for Avian Systematics |access-date= 2023-07-15}}
| type_species_authority = Blyth, 1845
| subdivision_ranks = Species
| subdivision = see text
| synonyms = * Hemixus Hodgson
}}
Hemixos is a songbird genus in the bulbul family, Pycnonotidae.{{BioRef|IOC| family=Pycnonotidae|version=Version 10.2 |access-date=5 August 2020}}
Taxonomy and systematics
Established by Edward Blyth in 1845 for the newly discovered ashy bulbul (H. flavala),Gregory (2000) this genus contains four extant species.{{BioRef|IOC| family=Pycnonotidae|version=Version 10.2 |access-date=5 August 2020}}
Some treatments merge the genus into Hypsipetes, often together with the rest of the traditional "Hypsipetes group" of bulbuls: Iole, Ixos, Microscelis and Tricholestes. But in this case, the closely related genera Alophoixus and Setornis would probably also have to be included, and as soon as the earliest described genus, Ixos, is merged with another its name would apply.Gregory (2000), Pasquet et al. (2001), Moyle & Marks (2006)
In fact, Hemixos is not particularly close to Hypsipetes, and a merger is not well justified. mtDNA NADH dehydrogenase subunits 2 and 3 and nDNA β-fibrinogen intron 7 sequence data puts it closer to (but still well distant from) the streaked bulbul (Ixos malaccensis). But whether that species represents the core group of Ixos – around its type species I. virescens (Sunda bulbul or green-winged bulbul) –, or a distinct lineage worthy of separation in a new genus – in which case Hypsipetes might be merged into the core group of Ixos – has not been studied. In any case, though minor, the Hemixos lineage with its stark white throat and light wing patches seems well distinct.Pasquet et al. (2001), Moyle & Marks (2006)
=Extant species=
Three species are currently recognised:
| class="wikitable" | |||
| Image | Scientific name | Common Name | Distribution |
|---|---|---|---|
| 125px | Ashy bulbul | Hemixos flavala | Himalayas, Patkai, Yunnan and Indochina |
| - | Cinereous bulbul | Hemixos cinereus | western Malesia |
| 125px | Chestnut bulbul | Hemixos castanonotus | southern China and Hainan |
=Former species=
Previously, some authorities also classified the following species (or subspecies) as species within the genus Hemixos:
- Cream-striped bulbul (as Hemixos leucogrammicus)
- Sumatran bulbul (as Hemixus sumatranus){{Cite web|url=http://avibase.bsc-eoc.org/species.jsp?lang=EN&avibaseid=5AD8890F&sec=summary&ssver=1|title=Ixos virescens sumatranus (Sumatran Bulbul) - Avibase|website=avibase.bsc-eoc.org|access-date=2017-09-23}}
Footnotes
{{Reflist}}
References
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- Gregory, Steven M. (2000): Nomenclature of the Hypsipetes Bulbuls (Pycnonotidae). Forktail 16: 164–166. [https://web.archive.org/web/20080828051747/http://www.orientalbirdclub.org/publications/forktail/16pdfs/Gregory-Bulbuls.pdf PDF fulltext]
- Moyle, Robert G. & Marks, Ben D. (2006): Phylogenetic relationships of the bulbuls (Aves: Pycnonotidae) based on mitochondrial and nuclear DNA sequence data. Mol. Phylogenet. Evol. 40(3): 687–695. {{doi|10.1016/j.ympev.2006.04.015}} (HTML abstract)
- Pasquet, Éric; Han, Lian-Xian; Khobkhet, Obhas & Cibois, Alice (2001): Towards a molecular systematics of the genus Criniger, and a preliminary phylogeny of the bulbuls (Aves, Passeriformes, Pycnonotidae). Zoosystema 23(4): 857–863. [https://web.archive.org/web/20090816123553/http://www.mnhn.fr/publication/zoosyst/z01n4a12.pdf PDF fulltext]
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