Type host: Parascalops breweri (Bachman, 1842), Hairy-tailed mole.

Other hosts: None reported to date.

Type locality: NORTH AMERICA: USA, Ohio, Ashtabula Co.

Geographic distribution: NORTH AMERICA: USA, Ohio.

Description of oocyst: Oocyst shape: subspheroid to ellipsoid; number of walls: 2; wall thickness: >1.0; wall characteristics: outer layer rough, ~2/3 of total thickness; inner, smooth; L x W: 18.0 x 14.3 (14-23 x 11-19); L/W ratio: 1.3 (1.1-1.7); M: absent; OR: absent; PG: absent. Distinctive features of oocyst: a membranous material, perhaps a thin inner oocyst wall layer, appears to hold the sporocysts together.

Description of sporocysts and sporozoites: Sporocyst shape: ovoid; L x W: 11.6 x 7.2 (8-14 x 5-9); L/W ratio: 1.6 (1.2-2.0); SB: present as crescent-shaped cap covering rounded end of sporocyst; SSB: absent; PSB: absent; SR: present; SR characteristics: several globules, often obscuring SP or as a compact mass; SP: without RB. Distinctive features of sporocyst: crescent-shaped SB.

Prevalence: 7/16 (44%)

Sporulation: Exogenous. Oocysts sporulated in 7-10 days in 2.5% aqueous (w/v) potassium dichromate solution at 23 C.

Prepatent and patent periods: Unknown.

Site of infection: Unknown. Oocysts recovered from feces and intestinal contents.

Materials deposited: Skin, skull, skeleton and tissues of the symbiotype host are preserved in the Mammal Division of the Museum of SW Biology, UNM: MSB No. 43419 (NK 31211, male), K. McBee #120, 29 June, 1980. Photosyntypes in the USNPC No. 80590.

Remarks: The sporulated oocysts of this species resemble those of C. megacephali because both have an unusual crescent-shaped SB. They differ, however, by lacking a PB, having a rough outer wall (vs. smooth), being somewhat smaller (18 x 14 vs 19 x 16), and by having sporocysts with a smaller L/W ratio (1.6 vs 2.1) and without a pointed end opposite the SB.

References: Ford and Duszynski (1989).