The name Fringillidae for the finch
family was introduced in 1819 by the English
zoologist William Elford Leach in a guide to the contents of the
British Museum. The taxonomy of the family, in particular the cardueline finches, has a long and complicated history. The study of the relationship between the
taxa has been confounded by the recurrence of similar morphologies due to the
convergence of species occupying similar niches. Beginning around 1990 a series of phylogenetic studies based on
mitochondrial and nuclear DNA sequences resulted in substantial revisions in the taxonomy. Several groups of birds that had previously been assigned to other families were found to be related to the finches. The
Neotropical Euphonia and the
Chlorophonia were formerly placed in the tanager family
Thraupidae due to their similar appearance but analysis of mitochondrial DNA sequences revealed that both genera were more closely related to the finches. They are now placed in a separate subfamily Euphoniinae within the Fringillidae. The
Hawaiian honeycreepers were at one time placed in their own family, Drepanididae but were found to be closely related to the
Carpodacus rosefinches and are now placed within the Carduelinae subfamily. The three largest genera,
Carpodacus,
Carduelis and
Serinus were found to be
polyphyletic. Each was split into
monophyletic genera. The American rosefinches were moved from
Carpodacus to
Haemorhous.
Carduelis was split by moving the greenfinches to
Chloris and a large clade into
Spinus leaving just three species in the original genus. Thirty seven species were moved from
Serinus to
Crithagra leaving eight species in the original genus. }} }}
Fossil record Fossil remains of true finches are rare, and those that are known can mostly be assigned to extant
genera at least. Like the other Passeroidea families, the true finches seem to be of roughly
Middle Miocene origin, around 20 to 10
million years ago (Ma). An unidentifiable finch fossil from the
Messinian age, around 12 to 7.3
million years ago (Ma) during the
Late Miocene subepoch, has been found at
Polgárdi in
Hungary. ==Description==