Pygidianops is a genus of pencil catfishes native to South America.

There are currently four recognized species in this genus:[1] P. eigenmanni is from the Rio Negro basin in Brazil.

P. magoi is known only from lower Orinoco mainstem between Ciudad Bolívar and Barrancas in Venezuela.

These fish are markedly miniaturized, yet retain a relatively well-ossified skeleton comparable in both bone differentiation and degree of calcification to that observed in larger trichomycterids.

[3] P. cuao is distinguished from congeners by the presence of diminutive eyes (vs. eyes absent in both other species), posterior naris absent (vs. nares bilaterally paired), and the presence of a triangular skin flap at mouth corner (vs. skin flap absent).