Type host: Mesotriton alpestris (Laurenti, 1768), Alpine newt.

Other hosts: None reported to date.

Type locality: EUROPE: France.

Geographic distribution: EUROPE: France.

Description of oocyst: Oocyst shape: ovoidal; number of walls: 2 (line drawing only shows 1); wall thickness: ~0.6; wall characteristics: outer smooth; L x W: 26 x 21 (22-33 x 18-25); L/W ratio: 1.2; M: absent; OR: present; OR characteristics: large spheroidal mass of granules of various sizes and occupies about 1/2 volume of oocyst; PG: absent. Distinctive features of oocyst: ovoidal shape and large OR.

Description of sporocysts and sporozoite: Sporocyst shape: ellipsoidal, slightly pointed at both ends; L x W: 12-15 x 6-7; L/W ratio: ~2.1; SB: may be present (line drawing); SSB: absent; PSB: absent; SR: present; SR characteristics: compact, ellipsoidal mass of large granules in center of sporocyst (line drawing); SZ: elongate, slightly pointed at one end, slightly rounded at the other, and slightly longer then sporocyst (line drawing). Distinctive features of sporocysts: none.

Prevalence: Unknown.

Sporulation: Unknown.

Prepatent and patent periods: Unknown.

Site of infection: Intestinal mucosa.

Endogenous development: Unknown.

Materials deposited: None.

Remarks: At the time, this was the third new species described by Lavier (1936). It has not been seen since its initial description.