| Contents | Classes | Subclasses | Orders | Suborders | Families |
Family CLEVELANDELLIDAE Kidder, 1938
| For | Clevelandiidae |
Body basically ovoid or elongate-ovoid, with posterior pole oddly shaped because of bearing entire buccal cavity and its (infundibular) opening; macronucleus and systémes sécants reminiscent of Nyctotheridae; endosymbionts in certain insects (termites, wood-feeding roaches) only.
| Clevelandella Kidder, 1938 (for Clevelandia; syn. Emmaninius). Many species. |
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| Metaclevelandella Uttangi & Desai, 1963. Single species. |
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| Paraclevelandia Kidder, 1937. Few species. |