Synonyms: Eimeria grobbeni of Doran, 1953.

Type host: Taricha torosa (Rathke, 1833), California newt.

Other hosts: None reported to date.

Type locality: NORTH AMERICA: U.S.A.: California, Los Angeles County, San Bernardino Mountains, Fish Canyon.

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

Description of oocyst: Oocyst shape: subspheroidal to slightly ellipsoidal; number of walls: 1; wall thickness: not given; wall characteristics: smooth; L x W: 11-13 x 10-12; L/W ratio: not given; M: absent; OR: absent; PG: absent. Distinctive features of oocyst: none

Description of sporocysts and sporozoite: Sporocyst shape: ovoidal, slightly pointed at one end; L x W: not given; L/W ratio: not given; SB: absent; SSB: absent; PSB: absent; SR: present; SR characteristics: a compact mass of fine and coarse granules that appear membrane-bound, usually found in more rounded end of sporocyst; SZ: shorter than length of sporocyst, generally sausage-shaped, without obvious RB or N (line drawing). Distinctive features of sporocysts: none.

Prevalence: 3 of 28 (11%).

Sporulation: Unknown.

Prepatent and patent periods: Unknown.

Site of infection: Unknown. Oocysts recovered from feces.

Endogenous development: Unknown.

Materials deposited: None.

Remarks: Doran (1953) found this eimerian in the feces of 3 of 28 California newts, T. torosa. He called it E. grobbeni, described from the Alpine salamander, S. atra (Rudovsky 1925), but he admitted that the oocysts from California newts may belong to a new species. Levine (1980) pointed out that the form observed by Doran (1953) differed from that species (E. grobbeni) in lacking a micropyle and in host genus and considered it a separate species which he named E. trichae.