Diplomystes camposensis is a species in the genus
Diplomystes which is a compound of
diplóos or
diploū́s, meaning "twofold" or "double", and
mystus, which means "moustache", an allusion to the two large barbels on upper lip of
Arius papillosus. This was originally coined as a
French vernacular name,
Diplomyste, by
André Marie Constant Duméril in 1856. The
specific name,
camposensis, adds the Latin suffix
-ensis, denoting place, onto the surname Campos, this is in honour of the Chilean ichthyologist
Hugo Campos, who encouraged Arratia to study the velevet catfishes. ==Description==