new species:
Loricaria holmbergi Rodríguez & Miquelarena, 2005

type locality:
Argentina, Province of Jujuy, cuenca del río San Francisco, arroyo en Aguas Calientes (23°44’S 64°38’W), holotype: ILPLA 1706 (103.1 mm SL, female)

distribution in Argentina:
only known from the type locality; holotype and paratypes ILPLA 347, MLP 9057 and 9058

published in:
Rodríguez, M.S. & M.A. Miquelarena (2005):
Una nueva especie de Loricaria (Siluriformes: Loricariidae) para la cuenca del río San Francisco, Jujuy, Argentina.
Anales de la Académia Nacional de Ciencias Exactas, Físicas y Naturales 55: 139-149

abstract (from publication):
Loricaria holmbergi, new species, from Aguas Calientes creek, northwestern highlands of Argentina, differs from all known species of the genus by the following combination of characters: anterior abdominal complex naked in the pectoral girdle region, thoracic length 12,5-17,4 % of SL; snout length 36,6-55,6 % of HL; number of plates in the lateral series 31-34; fused plates of the lateral series 12-15; upper unbranched caudal ray extended in a filament; pectoral spine thickened; postorbital notch moderately developed; and distinctive color pattern with small rounded and vermiculated dark spots, mainly over the sides and dorsal region of the head. Aguas Calientes is a complex of thermal waters, that because of its connection with other streams is the most diverse among the world’s thermal environments.