Imparfinis lineatus (Bussing, 1970) .

Pigmy Catfish; Barbudito.

Distribution: Global: Middle America; southern Costa Rica, Pacific drainages; Costa Rica: Tr (Pacific), 80– 980 m.a.s.l., Pri, Pot.

Occurrence and conservation status: End, EN.

References: Bussing (1987: 103, as Nannorhamdia lineata —synonym; 1998: 144, as N. lineata —synonym; brief description, including illustrations and an identification key, information on distribution, with a map, and ecology) and Angulo et al. (2013: 993; listed, including taxonomic information and distributional data).