hyalophysa hyalophysa hyalophysa is a genus of apostome ciliates of the family foettingeriidae. hyalophysa scientific classification domain: eukaryota clade: diaphoretickes clade: sar clade: alveolata phylum: ciliophora class: oligohymenophorea order: apostomatida family: foettingeriidae genus: hyalophysabradbury 1966 species hyalophysa clampi hyalophysa chattoni bradbury 1966