The Indonesian serin was formerly placed in the genusSerinus but a phylogenetic analysis of mitochondrial DNA sequences found that the species was not closely related to other member of Serinus nor to the geographically nearest finch, the Vietnamese greenfinch but to the European Goldfinch Carduelis carduelis and to the Citril Finch Carduelis citrinella.[2] The species was therefore assigned to a separate genus Chrysocorythus, a name that had previously been proposed by the German ornithologist Hans Edmund Wolters in 1967.[3][4]
The Mindanao serin (C. mindanensis) of Mindanao was formerly considered conspecific, together called the mountain serin, but was split as a distinct species by the IOC in 2021.[5]
The Indonesian serin is polytypic with four subspecies, including the nominate subspecies of western Java.[6] The other races include:
^Check-list of Birds of the World. Subfamily Carduelinae. (Howell, Paynter & Rand). 1968 (14:231).
^Bulletin of the British Ornithologists' Club 129(1):63
^Bulletin of the British Ornithologists' Club 102(1):12--13. 1982.
^Ottaviani, M. (2018). Is the subspecies of Mountain Serin Chrysocorythus estherae from Lore Lindu National Park, northern Central Sulawesi province, Indonesia, an undescribed taxon? BirdingASIA 30: 54-59. https://www.orientalbirdclub.org/birdingasia-30