Eimeria ovata Duncan, 1968.
Type host: Spermophilus
Ohter hosts: Tamias striatus; T.
Type locality: North America: USA, Essex County,
Massachusetts, Town of
Other localities: North America: USA, New
Description of oocyst: Oocyst shape: ovoid; wall
thickness: 1.2-1.6; layers:
2; outer layer proportion of total thickness: 3/4; outer layer colour: pale
green to colourless; outer layer texture: rough, with small pits; inner wall
characteristics: dark brown, smooth; micropyle: absent; OR: absent; PG:
present; number of PGs: 1; PG shape: irregular; PG L x W: not given; size:
26.1 x 16.7 (23-31 x 15-19); L/W ratio: 1.6 (1.4-1.7). Distinctive features of
oocyst: wall thins noticeably near its tapered end.
Description of sporocysts and sporozoites:
Sporocyst shape: ovoid; size: 11.8
x 7.8 (11-13 x 7.5-9); SB: present; SB L x W: not given; SB characteristics:
small; SSB: absent; PSB: absent; SR: present; SR characteristics: dense,
centrally located, usually rounded; SR size: not given; SP: stout and slightly
curved, at the end of the sporocyst. Distinctive features of sporocyst:
Material deposited: USNPC No. 87255
Remarks: Eimeria ovata was described from
striatus by Duncan (1968), but
also has been observed in S. lateralis and T. cinericollis (Wilber
Reference: Duncan (1968).