The Sporulated Oocyst of Eimeria colini sp. n. from the Bobwhite Quail, Colinus virginianus

The sporulated oocyst of Eimeria colini sp. n. is described from the bobwhite quail, Colinus virginianus. The broadly ellipsoid oocysts measured 24.8 µm (22.4 to 28.0) by 20.9 µm (17.9 to 22.4). The L/W ratio was 1.2 (1.1 to 1.4). An inconspicuous micropyle was present while an oocyst residuum and polar granule were absent. The oocyst walls were 1.4 µm thick and covered with small, evenly spaced elevations. The sporocysts measured 14.2 µm (12.3 to 14.5) by 8.4 µm (7.8 to 8.9). A sporocyst residuum, small Stieda body and large substieda body were present. Oocysts first appeared in the feces between 84 to 96 hr. Freshly-passed oocysts were completely sporulated by 48 hr at 25 C.