Clistolagenophrys

Mayén-Estrada, Rosaura & Clamp, John C., 2016, An annotated checklist of species in the family Lagenophryidae (Ciliophora, Oligohymenophorea, Peritrichia), With a brief review of their taxonomy, morphology, and biogeography, Zootaxa 4132 (4), pp. 451-492 : 455

· The genus Clistolagenophrys

was created by Clamp (1991) for Lagenophrys primitiva , which occurs on one of the endemic species of amphipods in Lake Baikal, Russia ( Swarczewsky 1930), because closure of its lorica aperture appears to be effected by a markedly different mechanism than in Lagenophrys ( Fig. 6 ). Clistolagenophrys primitiva retracts the entire loricastome within the lorica to close the aperture with its basal edges instead of pulling the lips together ( Swarczewsky 1930). Jankowski (1993) maintained that the lorica aperture of C. primitiva was not fundamentally different from that of Lagenophrys ; however, he offered no evidence to support this assertion.

Figures

FIGURE 6. Characteristics of Clistolagenophrys, from Clamp 1991. A, Lateral view of individual with lorica aperture in open position; B, Lateral view of lorica with lorica aperture retracted and closed. Scale bars = 10 µm.