Isospora hylomysis Colley and Mullin,
Type host: Hylomys suillus Muller,
1840, Lesser gymnure.
Type locality: ASIA: Malaysia,
Pahang, Bentong, in Janda Baik.
Geographic distribution: ASIA: Malaysia.
Description of oocyst: Oocyst shape:
spheroid to subspheroid;
number of walls: 1 (?);
wall characteristics: smooth, greenish yellow, finely striated;
L x W: 11.6 x 10.8 (11-12 x 10-12);
L/W ratio: 1.1 (1.0-1.3);
Distinctive features of oocyst: thick, smooth, striated oocyst
wall of only 1 layer.
Description of sporocysts and
Sporocyst shape: ellipsoid;
L x W: 6.6 x 4.8 (6-7 x 4-5);
L/W ratio: 1.4 (1.3-1.5);
SR characteristics: scattered, irregular granules;
SP: club-shaped, one end narrower than the other, without RB.
Distinctive features of sporocyst: ellipsoid shape without SB or
Prevalence: 10 of 21 (48%).
exogenous. Oocysts were sporulated after 7 days in 2.5 % potassium
dichromate solution at 30#&186; C.
Prepatent and patent periods:
Site of infection: Unknown.
Oocysts recovered from feces.
Materials deposited: The
symbiotype host (Frey et al., 1992) skin and skull are in the
Medical Ecology Museum, Institute of Medical Research, Kuala
Lumpur, Malaysia No. 86558.
Remarks:t This species has not been reported
since its original description.
References: Colley and