rosculus rosculus rosculus is a heterolobosean amoeboid genus. rosculus scientific classification domain: eukaryota (unranked): sar (unranked): rhizaria phylum: cercozoa class: helkesea order: helkesida family: guttulinopsidae genus: rosculushawes, 1963 species r. eleongata jousset, bass & geisen 2016 r. ithacus hawes 1963 r. macrobrachii (aravindan, kalavati & sheeja 2002) r. terrestris jousset, bass & geisen 2016 r. tropidonoti kalavati & lakshminarayana 1982