peces criollos - 11 September 2010, 00:39 Uhr
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Hypostomus microstomus + H. roseopunctatus combs.nov.

new combinations:
Hypostomus microstomus Weber, 1987
Hypostomus roseopunctatus Reis, Weber & Malabarba, 1990
Both were described originally in Hypostomus and listed by López et al. (2003) in the genus Watawata; the latter one as ‘especie limítrofe’.

remarks:
Reason for comb.nov. from publication: “Isbrücker et al. (2001) described 14 new genera of the Loricariidae. This study did not include phylogenetic analysis. I therefore defer recognition of any of the genera described until a phylogenetic analysis can prove that they should be recognized.”

published in:
Armbruster, J. W. (2004):
Phylogenetic relationships of the suckermouth armoured catfishes (Loricariidae) with emphasis on the Hypostominae and the Ancistrinae.
Zoological Journal of the Linnean Society 141: 1-80

abstract (from publication):
A phylogenetic analysis of nearly all genera of the Hypostominae and the Ancistrinae is provided based on osteology, external anatomy, and digestive tract anatomy. The results suggest that the Hypostominae is a paraphyletic assemblage. Delturus and Upsilodus form a monophyletic group sister to all other loricariids. Hemipsilichthys, Isbrueckerichthys, Kronichthys, and Pareiorhina form a monophyletic group with Neoplecostomus and the Hypoptopomatinae and are transferred to the Neoplecostominae. The remainder of the Hypostominae is made paraphyletic by the continuing recognition of the Ancistrinae. Ancistrinae is returned to the Hypostominae and recognized as a tribe, Ancistrini. In addition, four new tribes (Corymbophanini, Hypostomini, Pterygoplichthini, and Rhinelepini) are described. Hypostomus is also paraphyletic, the bulk of it forming a monophyletic clade with Aphanotorulus, Cochliodon, and Isorineloricaria. All of the potential monophyletic groups within Hypostomus grade into one another; therefore, Aphanotorulus, Cochliodon, and Isorineloricaria are placed in the synonymy of Hypostomus. Pterygoplichthys and Glyptoperichthys are also polyphyletic, and Liposarcus and Glyptoperichthys are recognized as synonyms of Pterygoplichthys. Sister to Pterygoplichthys is the Hemiancistrus annectens group (including Hypostomus panamensis) which represents an undescribed genus. The phylogeny presented is compared with previous hypotheses.