Eimeria pachylepyron Colley and Mullin, 1972.

Type host: Nycticebus coucang (Boddaert, 1785), Slow loris.

Other hosts: None reported to date.

Type locality: ASIA: Malaysia, Malaya.

Geographic distribution: ASIA: Malaysia, Malaya.

Description of oocyst: Oocyst shape: spheroid to subspheroid; number of walls: 2; wall thickness: outer 4, inner 1; wall characteristics: outer is thick, rough, brownish-yellow; inner, smooth, thin, yellow; L x W: 34.5 x 31.9 (30-38 x 28-36); L/W ratio: 1.1 (1.0-1.2); M: absent; OR: absent; PG: present; number of PG: 1-3; Distinctive features of oocyst: the thick outer wall.

Description of sporocysts and sporozoites: Sporocyst shape: ellipsoid; L x W: 14.2 x 11.2 (13-15 x 11-12); L/W ratio: 1.3 (1.2-1.4); SB: present; SSB: absent; PSB: absent; SR: present; SR characteristics: numerous scattered granules; SP: arranged head-to-tail in sporocyst; the photomicrograph in the original description suggests each SP may have a large, posterior RB. Distinctive features of sporocyst: larger than most other sporocysts with small L/W ratio.

Prevalence: 3/8 (37.5 %).

Sporulation: Exogenous. Oocysts sporulated within 1 wk in 2.5% aqueous potassium dichromate solution at 30ºC.

Prepatent and patent periods: Unknown.

Site of infection: Unknown. Oocysts recovered from feces.

Material deposited: None.

Remarks: This species has not been reported since its original description.

Reference: Colley and Mullin (1972).