Type host: Ambystoma tigrinum (Green, 1825), Tiger salamander.

Other hosts: None reported to date.

Type locality: NORTH AMERICA: U.S.A.: Iowa, Dickinson County, near Lakeside Laboratory.

Geographic distribution: NORTH AMERICA: U.S.A.: Iowa.

Description of oocyst: Oocyst shape: subspheroidal; number of walls: 1; wall thickness: not given; wall characteristics: smooth and of uniform thickness (line drawing; L x W: 22.2 x 19.2 (20-24 x 17-21); L/W ratio: 1.2; M: absent; OR: probably absent; PG: relatively small disc-like refractile granule described as the OR by Saxe (1955); number of PGs: 1. Distinctive features of oocyst: closely resembles E. kingi in the unsporulated state, otherwise, none.

Description of sporocysts and sporozoite: Sporocyst shape: ovoidal; L x W: 12.2 x 7.2 (11-14 x 6-8); L/W ratio: 1.7; SB: present as a small knob at pointed end of sporocyst; SSB: absent; PSB: asent; SR: present; SR characteristics: loose aggregation of refractile granules; SZ: R and N were not mentioned by Saxe (1955). Distinctive features of sporocysts: none.

Prevalence: Unknown.

Sporulation: Exogenous; ~66 h.

Prepatent and patent periods: Unknown.

Site of infection: Unknown.

Endogenous development: Unknown.

Materials deposited: None.

Remarks: The type host is the same individual as the type host of E. kingi. This species has not been found since its original description.