Isospora riccii Agostinucci, 1955
Type host: Talpa europaea Linnaeus, 1758, European mole.
Other hosts: None reported to date.
Type locality: EUROPE: Italy, near Rome.
Geographic distribution: EUROPE: Italy.
Description of oocyst:
Oocyst shape: ellipsoid;
number of walls: 1 (line drawing) or 2 (described as double-contoured);
wall thickness: ~1.0;
wall characteristics: smooth, yellow;
L x W: 22.9 x 14.5;
L/W ratio: 1.6;
PG: 2 small granules at one end of oocyst.
Distinctive features of oocyst: ellipsoid shape with 2 small PG at one end.
Description of sporocysts and sporozoites:
Sporocyst shape: ellipsoid;
L x W: 14.8 x 8.1;
L/W ratio: 1.8;
SR characteristics: irregular mass of large granules (line drawing);
SP: elongate, sausage-shaped without RB (line drawing).
Distinctive features of sporocyst: elongate, sausage-shaped SP.
Prevalence: 1/28 (4%).
Sporulation: Exogenous. Oocysts sporulated in 2 days.
Prepatent and patent periods: Unknown.
Site of infection: Unknown. Oocysts recovered from feces and intestinal contents.
Materials deposited: None.
Remarks: The 1956 paper by Agostinucci, in which he describes this species again, is identical to the 1955 paper.
References: Agostinucci (1955, 1956).