| eimeria clethrionomysis sp. n., eimeria gallatii sp. n., eimeria pileata sp. n. and eimeria marconii sp. n. from the red-backed vole clethrionomys gapperi vigors, from pennsylvania. | four new eimerian species are described from red-backed voles, clethrionomys gapperi in pennsylvania. sporulated oocysts of eimeria clethrionomyis sp. n. are ellipsoidal, 18.8 (16.5-21.5) x 14.9 (14.0-16.5) with elongate, ovoid sporocysts, 10.6 (9.5-12.0) x6.1 (5.5-7.0). the oocyst wall is smooth, with 2 layers, and thins, with terminal cap at one or both ends. polar granules, dark stieda body and sporocyst residuum are present. the oocyst residuum is absent. sporulated oocysts of eimeria galla ... | 1979 | 397341 |