Review of the andean armored catfishes of the genus Dolichancistrus Isbrücker (Siluriformes: Loricariidae)

@article{Ballen2012ReviewOT,
  title={Review of the andean armored catfishes of the genus Dolichancistrus Isbr{\"u}cker (Siluriformes: Loricariidae)},
  author={Gustavo A. Ballen and Richard P. Vari},
  journal={Neotropical Ichthyology},
  year={2012},
  volume={10},
  pages={499-518}
}
The loricariid catfish genus Dolichancistrus is reviewed and four species recognized. Species of Dolichancistrus are distinguished from each other by the degree of development of the pectoral-fin spine, the form of the distal margin of the pelvic fin, the relative size and form of the cheek plates, the pattern of odontodes along the margin of the snout, the presence versus absence of a buccal papilla at the premaxillary symphysis, and the relative lengths of the anal- versus pelvic-spines… 

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References

SHOWING 1-10 OF 51 REFERENCES
Pseudancistrus sidereus, a new species from southern Venezuela (Siluriformes: Loricariidae) with a redescription of Pseudancistrus
TLDR
Pseudancistrus sidereus is described from two collections of specimens from Amazonas, Venezuela and is diagnosed by the following synapomorphies: no suture between pterotic-supracleithrum and hyomandibula, no contact of the hyom andibula with the prootic, straight, spoon-shaped anterior process of metapterygoid.
Cordylancistrus nephelion (Siluriformes, Loricariidae), a new and endangered species of suckermouth armored catfish from the Tuy River, north-central Venezuela
A new species of suckermouth armored catfish, Cordylancistrus nephelion, is described from seven specimens collected in tributaries of the Tuy River in the Caribbean Sea basin of north-central
Two New Genera and Species of Ancistrini (Siluriformes: Loricariidae) from the Western Guiana Shield
TLDR
Two new ancistrin genera and species are described from main channels and tributaries of the upper Orinoco River in Amazonas, Venezuela, distinguished by its small body-size, large gas-bladder capsules, and highly protrusible mandibles.
Phylogenetic relationships of the suckermouth armoured catfishes (Loricariidae) with emphasis on the Hypostominae and the Ancistrinae
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
A New Black Baryancistrus with Blue Sheen from the Upper Orinoco (Siluriformes: Loricariidae)
Abstract Baryancistrus beggini, new species, is described from the upper Río Orinoco and lower portions of its tributaries, the Río Guaviare in Colombia and Río Ventuari in Venezuela. Baryancistrus
The genus Peckoltia with the description of two new species and a reanalysis of the phylogeny of the genera of the Hypostominae (Siluriformes: Loricariidae)
TLDR
A revised morphological phylogeny demonstrates the lack of support for Peckoltia and Hemiancistrus as monophyletic, and phenetic definitions are provided for the two genera.
A New Genus and Species of Weakly Armored Catfish from the Upper Mazaruni River, Guyana (Siluriformes: Loricariidae)
TLDR
The opercle of Paulasquama is sickle-shaped as in basal ancistrins, but has a posterior connection to the hyomandibula as in derived members of the Ancistrus clade.
Peckoltia sabaji, a new species from the Guyana Shield (Siluriformes: Loricariidae)
Peckoltia sabaji is described based on specimens from the Guyana Shield regions of the Essequibo, Negro, and Orinoco River drainages of Guyana and Venezuela. Peckoltia sabaji is a member of the
Four New Hypancistrus (Siluriformes: Loricariidae) from Amazonas, Venezuela
TLDR
Hypancistrus contradens and H. lunaorum differ from H. inspector by having the dorsal fin reaching the adipose fin when adpressed, having spots on the head the same size as the body or spots absent (vs. spots smaller on head) and by usually having 22–23 mid-ventral plates.
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