new species:
Rineloricaria misionera Rodríguez & Miquelarena, 2005

type locality:
Argentina, Province of Misiones, río Paraná basin, Caingúas Department, arroyo Cuña-Pirú (27º08’S 54º54’W); holotype ILPLA 1698 (97.4 mm SL, female)

published in:
Rodríguez, M.S. & M.A. Miquelarena (2005):
A new species of Rineloricaria (Siluriformes: Loricariidae) from the Paraná and Uruguay River basins, Misiones, Argentina.
Zootaxa 945: 1–15

abstract (from publication):
Rineloricaria misionera is a new species from the Paraná and Uruguay River basins, Misiones, Argentina. The new species is distinguished from all others in the genus by the following combination of characters: anterior abdomen covered by plates, except for the area corresponding to the pectoral girdle, which usually lacks plates, when present in this region, plates are relatively small and few; posterior abdomen with a well-developed preanal plate, bordered anteriorly by a series of 3–5 usually polygonal plates; premaxillary and dentary teeth with asymmetric cusps; uppermost caudal ray not prolonged in a filament; and snout tip with an oval naked area not reaching the last pore of the infraorbital sensory canal.

distribution & habitat (from publication):
Paraná and Uruguay River basins in Misiones Province, Argentina. Small streams having swift current over rocky and sandy bottoms. Individuals seek shelter between rocks, gravel, and crevices during the day, and are active mainly during the night.

For the collection of the paratypes ILPLA 1546 and 1551 financial support was provided by the GfI (German Ichthyological Society). A fact that the second author forgot to acknowledge.