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''Hemixos'' is a songbird genus in the bulbul family, Pycnonotidae. Established by Edward Blyth in 1845 for the newly discovered ashy bulbul (''H. flavala''), this small genus even today contains just two species:〔Gregory (2000)〕 * Chestnut bulbul, ''Hemixos castanonotus'' * Ashy bulbul, ''Hemixos flavala'' 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)〕 ==Footnotes== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Hemixos」の詳細全文を読む スポンサード リンク
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