Two new species of spotted Hypancistrus from the Rio Negro drainage (Loricariidae, Hypostominae)

By

Tan, Milton
Armbruster, Jonathan W.

Type

Article

Date of Publication

2016

Original Publication

ZooKeys

Volume

552

Pages

123-135

Subjects

Brazil , Guyana , Neotropics , Siluriformes , suckermouth armored catfish , taxonomy

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers

Identifiers

DOI: https://doi.org/10.3897/zookeys.552.5956

 

Abstract

Two new species, Hypancistrus phantasma and Hypancistrus margaritatus, are described based on material from the Rio Negro drainage. Both species are distinguished from congeners by unique color patterns. Hypancistrus phantasma is described from the Rio Uaupes and differs from congeners by having a tan body with small dark spots (vs. dark with light spots or with saddles or stripes). Hypancistrus margaritatus is described from the Takutu River and differs from congeners by having densely-packed light spots on a dark brown background, with spots about the size of the nasal aperture (vs. sparse light spots either smaller or larger than the nasal aperture, or brown to black spots, saddles, or stripes).