Setonophrys Jankowski, 1986

Clamp, John C. & Kane, John R., 2003, Redescription of Four Species of Lagenophryid Peritrichs (Ciliophora) from Australia and New Guinea, With Descriptions of Two New Species, Records of the Australian Museum 55 (2), pp. 153-168 : 161-162

Setonophrys Jankowski, 1986

Diagnosis. Solitary, loricate, with lorica aperture bounded by and closable by two opposing lips formed from folds of lorica material. Anterior lip of aperture thick-walled, rigid, usually with one or more spines on edge. Posterior lip thinwalled, flexible, pulled into lorica and pressed against anterior lip to effect closure of aperture. Vallum absent. Loricastome present, consisting of tubular passageway of lorica material that extends into interior of lorica from ventral edges of aperture lips. Edge of peristomial lip of trophont adherent to posterior surface of loricastome. Entire circumference of myonemal band within peristomial lip thickened. Macronucleus elongate, located in approximate centre of body, with same distinctive shape in all species. Medial portion of macronucleus extremely slender, straight or slightly curved, parallel to transverse axis of body or O. montanea asymmetrical shorter yes uniform than wide in height short posterior edges none Colubotelson joyneri , sloping abruptly; Colubotelson sp. “squared-off” shape

O. zeehanensis asymmetrical shorter no uniform moderately posterior edges none Phreatoicoides than wide in height tall sloping gradually; longicollis “rounded” shape

O. haswelli symmetrical shorter no uniform moderately posterior edges laterally pro- Mesacanthotelson than wide in height tall sloping abruptly jecting spine tasmaniae and flared outward on left margin

O. inornata asymmetrical subcircular no uniform moderately posterior edges none Phreatoicopsis terricola , to longer in height tall sloping abruptly; Colubotelson chiltoni than wide “squared-off” shape

O. obstipa asymmetrical shorter no sloping short posterior edges none Metaphreatoicus than wide from right sloping abruptly; australis to left “squared-off” shape (Chilton, 1891)

slanting posteriad from left to right at slight angle to transverse axis. Ends of macronucleus much thicker than medial portion, curved anteriad away from medial portion.

Generic composition. The following species are currently assigned to Setonophrys : S. bispinosa ( Kane, 1965) ; S. communis ( Kane, 1965) ; S. lingulata ( Kane, 1965) ; S. nivalis ( Kane, 1969) ; S. occlusa ( Kane, 1965) ; S. seticola ( Kane, 1965) ; S. spinosa ( Kane, 1965) ; S. tricorniculata Clamp, 1991 .