Abstract
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 speciesas 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.
Highlights
The Loricariinae is composed by approximately 39 genera and 239 species (Eschmeyer & Fong, 2015) distributed from the río de La Plata in Argentina to the coastal basins of the Pacific Ocean and Caribbean Sea in southern Central America (Ferraris, 2003)
The heuristic search was performed with 1000 replications of Random Addition Sequence and branch swapping through the Tree Bisection Reconnection (TBR) algorithm, with additional TBR swapping to completion, Distribution
In this study we found that D. filamentosa is the senior synonym of D. seminuda, but we rejected the remaining synonyms proposed by Dahl, since D. latiura is a valid species with D. tuyrensis as its junior synonym and L. fimbriata was transferred to Spatuloricaria
Summary
The Loricariinae is composed by approximately 39 genera and 239 species (Eschmeyer & Fong, 2015) distributed from the río de La Plata in Argentina to the coastal basins of the Pacific Ocean and Caribbean Sea in southern Central America (Ferraris, 2003) Species belonging to this subfamily are characterized by a long depressed caudal peduncle and the absence of an adipose fin. The genus was described by Isbrücker & Nijssen (in Isbrücker, 1979) to include Loricaria filamentosa Steindachner, 1878, from the río Magdalena as its type species In their description, those authors indicated that the genus was related to Spatuloricaria Schultz, 1944, “Dasyloricaria is similar to Spatuloricaria in general appearance and structure of the lips” (Isbrücker, 1979: 90; our translation). Those authors proposed a few diagnostic characters to the genus: two Neotropical Ichthyology, 14(1): e150120, 2016
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