The name is a combination of the Ancient Greek  ("pachys"), meaning "thick", and the related genus Onomastus. The species is named in honor of Kálmán Kittenberger, who collected the species.
The scientific name reflects the physical characteristics of the species, with "pachys" indicating its thick nature. The species is named after Kálmán Kittenberger, a collector who played a role in its discovery and identification.