Type host: Pipistrellus kuhlii (Kuhl, 1817), Asian pipistrelle.

Other hosts: None reported to date.

Type locality: ASIA: Saudi Arabia, Central region, Riyadh City.

Geographic distribution: ASIA: Saudi Arabia.

Description of oocyst: Oocyst shape: subspheroidal; number of walls: 1 obvious layer; wall thickness: 0.8 (0.6-1.0); wall characteristics: slightly striated and light greenish-yellow, mammillated; L x W: 27.6 x 25.9 (25-32 x 23-30); L/W ratio: 1.1 (1.0-1.2); M: absent; OR: present; OR characteristics: irregular in size and shape, consisting of several globules, 0.8-5.0 PG: 1, spheroidal. Distinctive features of oocyst: 1-layered, straited and mammillated wall.

Description of sporocysts and sporozoites: Sporocyst shape: elongate-ovoidal; L x W: 12.6 x 8.5 (12-14 x 8-9); L/W ratio: 1.5 (1.5-1.6); SB: present at the slightly tapered end of sporocyst as a flat, dark structure; SSB: present (?), but not evident in either the photomicrographs or the original line drawing; PSB: absent; SR: present; SR characteristics: composed of many dispersed, small granules that sometimes obscure SP; SP: elongate, each with 1 RB at broad end and 1 smaller RB at pointed end. Distinctive features of sporocyst: flat, opaque SB.

Prevalence: 4/15 (27%)

Sporulation: Exogenous. Oocysts sporulated in 2.5% aqueous (w/v) potassium dichromate solution at ~26 C.

Prepatent and patent periods: Unknown.

Site of infection: Unknown. Oocysts recovered from intestinal contents.

Materials deposited: Oocysts in 10% formalin and photosyntypes of sporulated oocysts in the Parasitological Collection, Zoology Department, College of Science, King Saud University, Riyadh, Saudi Arabia, KSUC No. 106.

Remarks: The sporulated oocysts of this species differ from those of E. macyi in having larger oocysts and sporocysts, in the presence of an OR and by having a spheroidal PG. They differ from those of E. redukeri in having larger oocysts and sporocysts, a single, striated oocyst wall, an OR of several globules, a spheroidal PG, and an SR of many small granules. Finally, the differ from those of E. pipistrellus and E. chiropteri in having larger oocysts and sporocysts, a single, striated oocyst wall, and in having an OR of several globules.

References: Alyousif (1999).