Taxonomic revision and phylogenetic relationships of Dasyloricaria Isbrücker & Nijssen, 1979 (Siluriformes: Loricariidae), with description of a new species

Abstract

A taxonomic revision and phylogenetic analysis were completed for Dasyloricaria. The genus includes three valid species: D. filamentosa and D. latiura previously included in the genus, and a new species described herein. Dasyloricaria have a restricted trans-Andean distribution, with D. filamentosa occurring at the lower and middle Magdalena, lower Cauca, and Sinu in Colombia, and lago Maracaibo basin in Colombia and Venezuela; D. latiura in the Atrato and the Tuyra basins in Colombia and Panama, respectively; and the new species in the upper and middle Magdalena basin in Colombia. New synonyms for D. filamentosa and D. latiura are proposed, and a lectotype is designated for the latter. Dasyloricaria is herein recognized as monophyletic, with D. filamentosa as the sister group of D. latiura, and the new species as sister to that clade. Spatuloricaria is hypothesized to be the sister group of Dasyloricaria based on synapomorphies of the neurocranium, branchial arches and external morphology features. The subtribe Rineloricariina was partially corroborated through the phylogenetic analysis. An identification key for the species of Dasyloricaria is provided.Una revisión taxonómica y análisis filogenético fueron realizados para Dasyloricaria. El género incluye tres especies válidas: D. filamentosa y D. latiura previamente incluidas en el género, y una especie nueva descrita en este estudio. Dasyloricaria presenta una distribución estrictamente Transandina, con D. filamentosa ocurriendo en las porciones baja y media del rio Magdalena, bajo Cauca, y en el rio Sinú en Colombia, y en el lago Maracaibo en Colombia y Venezuela; D. latiura en la cuenca de los ríos Atrato y Tuyra en Colombia y Panamá, respectivamente; y la especie nueva en las porciones alta y media del rio Magdalena en Colombia. Nuevas sinonimias para D. filamentosa y D. latiura son propuestas, y el lectotipo es designado para esta última. Dasyloricaria es aquí reconocido como monofilético, con D. filamentosa como el grupo hermano de D. latiura, y la especie nueva como el grupo hermano de ese clado. Spatuloricaria es propuesto como el grupo hermano de Dasyloricaria, este clado está soportado por sinapomorfías del neurocráneo, arcos branquiales y características de morfología externa. La sub-tribu Rineloricariina fue parcialmente corroborada a partir del análisis filogenético. Una clave de identificación para las especies de Dasyloricaria es presentada.

A combined molecular and morphological phylogeny of the Loricariinae (Siluriformes: Loricariidae), with emphasis on the Harttiini and Farlowellini

“…The compound pterotic is related to swimbladder hydrostatic communication in loricariids, with its perforations allowing a direct contact of the latter to the environment. Perforations in the bone surface can be either small, as simple needle punctures (state 0), as seen in outgroups and a few Farlowella , Sturisoma , and Sturisomatichthys , or clearly larger (state 1; [ 76 : fig 9]), as in most Harttiini, Farlowellini, and Loricariini.…”

“…As well as its shape, the size of the preopercle is highly variable in the groups examined. The outgroup, Harttia , Lamontichthys , and Pterosturisoma have the preopercle deeper than the quadrate (state 0; Fig 8D ); in Farlowellini and Hypostominae examined the preopercle is as deep as the quadrate (state 1; Fig 8E ); and in Loricariini of the preopercle is shorter that the quadrate (state 2; [ 76 : fig 10B]).…”

“…The Weberian apparatus of loricariids comprises the first five fused vertebrae and associated ribs [71,72], and its origin has been extensively studied [73][74][75]. The apparatus has a lateral expansion, the transverse process of the complex centrum, which articulates anteriorly with the basioccipital and compound pterotic and encapsulates the swim bladder [41,76]. A fenestra with a small laminar process between the transverse process and the basioccipital (state 1; Fig 5, The transverse process of complex centrum was observed to be short, not reaching the level of the compound pterotic lateral border (state 0; [28: fig 26B]…”

Loricaria cuffyi (Siluriformes: Loricariidae), a new species of loricariin catfish from the Guiana Shield

“…When a structure was found to be damaged on the left side, the right side of the structure was analysed. Plate series nomenclature followed Thomas and Rapp Py‐Daniel (2008), Thomas and Sabaj Pérez (2010) and Londoño‐Burbano and Reis (2016). Posterior lateral plates were examined here as the median series beginning with the first plate on which the dorsal and ventral odontode keels meet, and continue parallel to each other to the end of the caudal peduncle.…”

A new species of Sturisoma (Loricariidae: Loricariinae) from the Madre de Dios River basin, Peru, with a key to all congeners and comments on the type series of Sturisoma rostratum

“…Counts and nomenclature of lateral plate series follow Ballen et al . (), nomenclature of abdominal plate series follow Londoño‐Burbano & Reis () and tooth cusp names follow Müller & Weber (). Number of specimens in alcohol and cleared and stained are indicated by alc and c&s, respectively.…”