@INCOLLECTION{TreeBASE2Ref20918, author = {Stanley H. Weitzman and Na?rcio A. Menezes}, title = {Relationships of the tribes and genera of the Glandulocaudiinae (Ostariophysi: Characiformes: Characidae), with a description of a new genus.}, year = {1998}, keywords = {}, doi = {}, url = {http://}, pmid = {}, booktitle = {Phylogeny and Classification of Neotropical Fishes.}, isbn = {}, publisher = {Edipucrs}, address = {Porto Alegre}, editor = {Luiz R Malabarba and Roberto E Reis and Richard E Vari and Zilda Margarete Seixas de Lucena and Carlos Alberto S. de Lucena}, pages = {171--192}, abstract = {An examination of the caudal structures of the nineteen glandulocaudine genera and many of their species suggested that a reconsideration of the phylogenetic relationships of the genera of the four recognized tribes, the Diapomini, Corynopomini, Glandulocaudini, and Xenurobryconini, and three incertae sedis genera, Landonia, Phenacobrycon, and Pseudocorynopoma, would result in a more useful phylogenetic reorganization of the subfamily. Only two of these tribes, the Xenurobryconini and the Glandulocaudini, were previously diagnosed using phylogenetic methods. Varied skeletal, muscular, histological, and ultrastructural parts of the primary and secondary reproductive system form most of the basis of the present preliminary analysis. Although we suggest this analysis produces several improvements in understanding the relationships of the clades within the Glandulocaudinae, more detailed study of the species and genera of some clades will be necessary before a stable phylogeny is attained. Nevertheless, we suggest that our new phylogeny will make future analyses and discussions of the lesser studied clades more equivalent to those already studied in greater detail. Unequivocal synapomorphies for certain of the nodes accepted here suggest that the Glandulocaudini, Diapomini, Corynopomini, and Xenurobryconini can still be considered tribes of the Glandulocaudinae in a sequenced classification, but that the later three tribes form part of a clade, Clade 3, that also includes two additional new tribes, the Hysteronotini and Phenacobryconini. Another new tribe, the Landonini, is equivalent to Clade I in our tree. The previous Glandulocaudini is retained and is equivalent to Clade 2 in our tree. The Landonini and the Phenacobryconini have relatively uncertain relationships and when more data are available the Phenacobryconini may be in- clUdedin one or another of the other tribes of Clade B. Examination of the caudal structures of the corynopomin genera as diagnosed here brought about recognition of a new genus, Chrysobrycon, described here for two species, C. hesperus and C. myersi, both formerly placed in Hysteronotus. A preliminary cladogram for all glandulocaudine genera is presented and its apparent strengths and weaknesses are discussed.} }

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