Type host: Myotis myotis (Borkhausen, 1797), Large mouse-eared bat.

Remarks: Gottschalk (1969) found some spheroidal-subspheroidal structures 15 x 14.5 (12-21 x 11-20) in the large intestine and others (14.4 x 13.8) in the small intestine, which he named E. myotis. Frank (1978) also reported seeing stages of this form in the jejunum of a M. myotis collected in Austria. However, since sporulated oocysts were never seen or described, some (Wheat 1975; Duszynski and Barkley 1985; others) have considered this name a nomen nudum. However, species inquirendae, defined by Ride et al. (1985) as a "doubtfully identified species needing further investigation," seems a more appropriate term. Thus, this form must remain a species inquirendae until it can be studied and described more completely..