Type host: Euphlyctis cyanophlyctis (Schneider, 1799), Skipping frog.

Other hosts: None reported to date.

Type locality: ASIA: India, Calcutta suburbs.

Geographic distribution: ASIA: India.

Description of oocyst: Oocyst shape: ovoidal to ellipsoidal; number of walls: 1; wall thickness: very thin; wall characteristics: transparent; L x W: 19.9-15.4 x 17.6-15.4; L/W ratio: unknown; M: absent; OR: present; OR characteristics: an irregular mass of granules containing a large globule; PG: absent. Distinctive features of oocyst: thin, transparent outer wall and the prominent OR with a large globule embedded in it.

Description of sporocysts and sporozoite: Sporocyst shape: spindle-shaped with one end tapering more than the other; L x W: 11 x 4.4-6.6; L/W ratio: unknown; SB: absent; SSB: absent; PSB: absent; SR: absent; SZ: elongate with the anterior end poointed and a N (RB?) present at the broader end. Distinctive features of sporocysts: small size and spindle-shaped with one end more pointed (SB?) than the other.

Prevalence: Unknown.

Sporulation: Exogenous. 60-75 h (Mandal, 1976).

Prepatent and patent periods: Unknown.

Site of infection: Intestine (Mandal, 1976).

Endogenous development: Early, uninucleate meronts are spheroidal, ~2.2 wide. These develop into meronts with 8 N. Microgamonts were 4.4 wide with a large number of chromatin granules that transformed into comma-shaped microgametes. Mature macrogamonts were 11 wide with a central N in a matrix of highly granular cytoplasm.

Materials deposited: None.

Remarks: This species was named and briefly described in an abstract by Chakravarty and Kar (1944), but there was no line drawing; thus, initially, it was a species inquirenda. In 1952, the same authors provided a more detailed account of the oocyst, modest information on the endogenous stages, and a line drawing to document their observations. Mandal (1976) added further descriptive information, but the oocysts he measured were 17.9 x 16.7 (15.5–20 x 13.3–15.5) with a L/W ratio of 1.1; these differ in width, and thus, in L/W ratio. The sporocysts Mandal (1976) measured were 11.5 x 5.5 (10.5–12.5 x 4.5–6.5) with a L/W ratio of 2.1, very similar to those in the original description. Mandal (1976) described the oocysts as ovoidal to subspheroidal in shape, yet his drawing shows them to be ovoidal.