Type host: Ambystoma jeffersonianum (Green, 1827), Jefferson salamander, but see Remarks below.

Other hosts: None reported to date.

Type locality: NORTH AMERICA: U.S.A.: Minnesota, near Bemidji, Beltrami County.

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

Description of oocyst: Oocyst shape: spheroidal; number of walls: 2; wall thickness: ~1.5; wall characteristics: outer smooth, ~2/3 of total thickness (line drawing); L x W: 18.5-22.5; L/W ratio: 1.0; M: present, about 1.5-2.0 wide appearing as a small knob on oocyst wall; OR: absent; PG: absent. Distinctive features of oocyst: presence of M.

Description of sporocysts and sporozoite: Sporocyst shape: elongate ovoidal, slightly pointed at one end; L x W: 15.5-16 x 7-8; L/W ratio: not given; SB: present as a small knob ar pointed end of sporocyst; SSB: absent; PSB: absent; SR: present; SR characteristics: spheroidal, highly granular body, 2-2.7, that appears membrane bound (line drawing); SZ: crescent-shaped, 6-7 long, with N equidistant between ends, RB not mentioned or shown in line drawing (Doran, 1953). Distinctive features of sporocysts: membrane-bound SR.

Prevalence: 2 of 7 (29%).

Sporulation: Exogenous, 64-72 h.

Prepatent and patent periods: Unknown.

Site of infection: Unknown. Oocysts recovered from feces.

Endogenous development: Unknown.

Materials deposited: None.

Remarks: Doran (1953) lists the blue-spotted salamander A. jeffersonianum as the host. However, A. jeffersonianum, the Jefferson salamander, is not known to occur in Minnesota (Conant & Collins 1991; McAllister et al. 1993). Because the taxonomy of A. jeffersonianum and the blue-spotted salamander A. laterale was in a state of confusion (Bishop 1943) until Uzzel’s work (1964), we think that the actual host Doran (1953) was dealing with was A. laterale or a hybrid species (Lowcock et al. 1987; Upton et al. 1993) which occurs commonly in Minnesota (Oldfield & Moriarty 1994).