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 22) Monocystis ranaghatensis Bandyopadhyay &Mitra, 2005 Infested organ. Seminal vesicles Type host. Eutyphoeus waltoni Type locality. Ranaghat, Nadia, West Bengal , India Description. Trophozoites of M. ranaghatensis are napiform, having a nearly spheroid to ellipsoid or ovoid body, 119.0 167.0 (124.0±11.0) µm × 57.0 84.0 (62.0±1.9) µm with a prominent tail like structure at the posterior end and ellipsoidal nucleus measures, 9.0 22.0 (12.0±0.4) µm × 9.0 13.0 (10.0±1.5) µm. Gametocysts are eggshaped measuring 95.0-124.0 (105.0±0.9) µm Oocysts are biconical measuring 7.6 10.1 (9.3±1.1) µm ×4.1 5.6 (4.5±1.3) µm.