Eimeria from Bats of the World: Two New Species from Myotis spp. (Chiroptera: Vespertilionidae)

Between 1986 and 1995, 548 fecal samples were collected from 41 species of bats (Molossidae, Mormoopidae, Phyllostomidae, Thyropteridae, and Vespertilionidae) from New Mexico, California, Baja California Sur (Mexico), and Bolivia. Of these, the feces of 28 (5%) bats, including Antrozous pallidus, Myotis ciliolabrum, Myotis lucifugus, and Myotis yumanensis (Vespertilionidae), contained oocysts representing at least 3 species of Eimeria. A new species of eimerian from M. lucifugus (3/27, 11%) and M. yumanensis (8/70, 11%) is described. Sporulated oocysts are ellipsoidal, 22.3 x 14.8 (18-25 x 13-16) µm with micropyle (~2 µm) and polar granules (1-4), but an oocyst residuum is absent. The oocyst wall is slightly rough exteriorly and has 2 layers (total ≤1 µm thick). Football-shaped sporocysts are 8.1 x 6.6 (8-11 x 5-7) µm, each with a Stieda body and granular sporocyst residuum present. A new eimerian from M. yumanensis (4/70, 6%) and M. ciliolabrum (1/12, 8%) also is described. Sporulated oocysts are spheroidal to subspheroidal, 15.0 x 14.1 (14-16 x 14-16) µm, with micropyle and oocyst residuum absent; a polar granule is present. The wall is smooth and has 2 layers (total