http://dx.doi.org/10.1590/1982-0224-20160132
gets renamed Rhyacoglanis pulcher as the type specimen for genus. (I have not altered the CLOG on this yet, to make sure the rename sticks officially; for now, it remains as Pseudopimelodus pulcher in the CLOG. If I should alter this, I'm happy to do so if given approval).
New species:
Shibatta & Vari wrote:ABSTRACT
, a new genus of the South American freshwater catfish family Pseudopimelodidae is described from cis-Andean portions of the continent. Rhyacoglanis is distinguished from other genera of the family by three synapomorphies: presence of a light blotch on the cheek; a connection between the middle of the dark caudal-fin stripe and the dark caudal-peduncle pigmentation; and 30-35 total vertebrae. Species of Rhyacoglanis are rheophilic and strongly associated with rapids and other swift-flowing waters. A phylogenetic analysis based on 41 morphological characters yields a hypothesis of monophyly of the Pseudopimelodidae and Rhyacoglanis. Boulenger, 1887, from the western Amazon basin is designated as type-species of the new genus and redescribed. Four new species are described: Rhyacoglanis annulatus, from the río Orinoco basin, with a nearly ringed dark band on the caudal peduncle, and a larger distance between anus and anal-fin origin; R. epiblepsis, from the rio Madeira basin, with numerous dark spots scattered on the body, and rounded caudal-fin lobes; R. paranensis, from the upper rio Paraná basin, with three distinct dark bands on the body, and 31-33 total vertebrae; and R. seminiger, from the rio Juruena basin, with subdorsal and subadipose dark bands fused anteroposteriorly, and a separate dark band on the caudal peduncle.
- Keywords: Biodiversity; Identification key; Phylogeny; Systematics; Taxonomy
- a. Body with three dark bands - subdorsal, subadipose and caudal peduncle; sometimes inconspicuous or absent ..... 2
- 1. b. Body with two dark bands - an anteroposteriorly expansive band formed from a fusion of the subdorsal and subadipose bands, and a separate caudal-peduncle band ..... (rio Juruena basin)
- a. Dorsal regions of subdorsal and subadipose bands separate ..... 3
- 2. b. Dorsal regions of subdorsal and subadipose bands united by dark stripe along dorsal portion of body ..... (western Amazon basin)
- a. Dark caudal-peduncle band uniformly pigmented ..... 4
- 3. b. Dark caudal-peduncle band with unpigmented central section ..... (río Orinoco basin)
- a. Caudal-fin lobes rounded; body covered with multiple small dark spots; dark bands on body inconspicuous to absent ..... (rio Madeira basin)
- 4. b. Caudal-fin lobes pointed; body with few small dark spots; dark bands on body conspicuous ..... (upper rio Paraná basin)
