LithoxancistrusLithoxancistrus is a small genus of suckermouth armored catfishes native to South America.SpeciesThere are currently two recognized species in this genus:Lithoxancistrus orinoco Isbrücker, Nijssen & Cala, 1988 ''Lithoxancistrus yekuana''TaxonomyLithoxancistrus was erected in 1988, but was later synonymized with Pseudancistrus. It was revalidated as a genus in 2012.