holosticha antarctica holosticha antarctica holosticha antarctica is a species of littoral ciliates, first found near king george island. holosticha antarctica scientific classification domain: eukaryota (unranked): sar (unranked): alveolata phylum: ciliophora class: spirotrichea subclass: hypotrichia order: urostylida family: holostichidae genus: holosticha species: h. antarctica binomial name holosticha antarcticawilbert & song, 2008