A checklist of the species under the genus Monocystis Von Stein, 1848 (Apicomplexa: Sporozoa: Monocystidae) described from oligochaete hosts Author Sarkar, Sutapa Author Bandyopadhyay, Probir K. prabir0432@hotmail.com text Zootaxa 2013 2013-09-16 3710 4 381 388 journal article 4792 10.11646/zootaxa.3710.4.7 02be72df-b930-4f7a-9c69-60ed36d29347 1175-5326 6164248 5B76EC26-3663-4725-9F2F-6F19F149F303 15) Monocystis lloydi Ghosh, 1923 emend. Loubatieres, 1955 Infested organ. Seminal vesicles Type host. Pheretima posthuma Type locality. Calcutta, West Bengal , India Description. Trophozoite rounded or ovoid, length 100 µm, gametocyst spherical or ovoid and 84 µm in diameter.