taxonID	type	description	language	source
9F009446F56A6551FF51FB91FB93493E.taxon	description	The genus Apolocystis was erected by Cognetii de Martiis in 1923, having solitary, spherical gamonts without principle axis and biconical oocyst. Later on, many scientists worked on the genus Apolocystis and documented forty one species, (Cognetii de Martiis, 1923; Troisi, 1933; Philips and Mackinnon, 1946; Tuzet and Loubatieres, 1946; Loubatieres, 1955; Berlin, 1924; Meier, 1956; Tuzet and Zuber-Vogeli, 1955; Tuzet and Vogeli, 1956; Meier, 1956; Rees, 1963; Bereczky, 1967; Ramadan 1969; Segun, 1971 and 1978; Frolov, 1991; Loubatieres, 1995; Gullo Armeendariz, 2002; Ramadan et al., 2014, 2015 and Ali et al., 2018) out of which only seven species have so far been reported from india (Pradhan and Dasgupta, 1983; Bhatia and Setna, 1926; Bandyopadhyay et al., 2004; Bhowmik et al., 2012). In view of this it has become necessary to establish an updated checklist of different Apolocystis species. The checklist is presented below including type host, type locality and site of infection in Table 1. Summary In this communication, forty-one species belonging to the genus Apolocystis Cognetii de Martiis, 1923 have been consolidated. All these aseptate gregarine fauna have been documented from different oligochaete hosts of various geographical distributions, including the site of infections. This communication will enlighten on the taxonomic studies and evolution of the genus Apolocystis. Acknowledgement One of the authors (BK) is thankful to the University of Kalyani, Kalyani for providing research scholarship to carry out the work.	en	Kundu, Beauty, Bandyopadhyay, Probir K. (2019): A checklist of protozoan parasite belonging to the genus Apolocystis Cognetii de Martiis, 1923 (Apicomplexa: Eugregarinida: Monocystidae) recorded from oligochaete hosts. Records of the Zoological Survey of India 119 (4), DOI: 10.26515/rzsi/v119/i4/2019/131767
