'paraguariensis' originates from Neo‑Latin, specifically formed from the place name 'Paraguaria' (a Latinized form of 'Paraguay') plus the Latin adjectival suffix '-ensis' meaning 'originating in' or 'from'.

'paraguariensis' was created in modern taxonomic Latin by combining a Latinized form of the geographic name 'Paraguay' with the productive Latin suffix '-ensis'; it entered scientific usage as a specific epithet in biological nomenclature and is used unchanged in modern species names.

Initially it meant 'of or from Paraguay' in a geographic/relational sense, and it retains that meaning when used as a taxonomic epithet.