Molecular phylogeny and systematic revision ofBanganasensu lato (Teleostei, Cyprinidae)

Bangana sensu lato (s.l.) has a confusing taxonomic history and has been verified as non-monophyletic based on molecular studies. However, although taxonomic revision of Bangana is urgently required, revision is pending as samples for all included species are not currently available. In this study, partial sequences of three nuclear (exon 3 of recombination activating protein 1, early growth response protein 2B gene, and interphotoreceptor retinoid binding protein gene) and two mitochondrial genes (cytochrome b and cytochrome oxidase subunit I) from 14 species of Bangana s.l. and 24 outgroup taxa were analyzed to clarify the phylogenetic relationships of Bangana s.l. Except for Gymnostomus ariza and Incisilabeo behri, our study indicated that the remaining species presently assigned to this grouping could be divided into three major clades, with the third clade being non-monophyletic. Based on our molecular phylogenetic results, we propose that the clade consisting of Bangana s.l. species with interrupted postlabial grooves (which excludes the clade containing the type species of Bangana) should be recognized as a new genus, which we name Decorus herein. The distinguishing morphological characters for this new genus are presented in this manuscript.