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''Iole'' is a genus of bulbuls, songbirds in the family Pycnonotidae. They are native to tropical eastern Asia, from India to China and south through Southeast Asia to northern Indonesia. It includes the following species: * Olive bulbul, ''Iole virescens'' * Grey-eyed bulbul, ''Iole propinqua'' * Buff-vented bulbul, ''Iole olivacea'' (type species) * Yellow-browed bulbul, ''Iole indica'' * Sulphur-bellied bulbul, ''Iole palwanensis'' Some older sources merge this genus into ''Hypsipetes''. But this is neither advisable nor technically correct. The two genera stand well apart, and to phylogenetically justify their merging, the entire "''Hypsipetes'' group" of bulbuls would need to be united in a single genus. That would include ''Hemixos'', ''Ixos'', ''Microscelis'' and ''Tricholestes'', and probably also ''Alophoixus'' and the monotypic ''Setornis''. The hook-billed bulbul (''S. criniger'') may in fact be the closest living relative of ''Iole'', but altogether the present genus may well be a quite basal lineage of the traditional "''Hypsipetes'' group" of bulbuls, with no particularly close relatives among these.〔Gregory (2000), Pasquet ''et al.'' (2001), Moyle & Marks (2006)〕 According to mtDNA NADH dehydrogenase subunits 2 and 3 and nDNA β-fibrinogen intron 7 sequence data ''Alophoixus'' is only slightly more distant from ''Hypsipetes'' than ''Iole'' is, whereas mtDNA 12S rRNA and 16S rRNA sequence data places it actually closer to ''Hypsipetes'' than to ''Iole''. And furthermore, the genus name ''Ixos'' pre-dates ''Hypsipetes'', and thus would apply to such a thoroughly merged "wastebin taxon".〔 ==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「Iole (genus)」の詳細全文を読む スポンサード リンク
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