Coelogregarina Ghélélovitch, 1948 is a synonym of Mattersia.
Mattesia bombi has been moved to a new genus — Apicystis bombi.
References
↑Naville, A. (1930). "Recherches cytologiques sur les schizogrégarines. I. le cycle évolutif de Mattesia dispora n.g., n.sp". Z Zell Anat. 11: 375–396.