Plagiopyla binucleata, AGAMALIEV, 1978

PLAGIOPYLA BINUCLEATA AGAMALIEV, 1978

1978: Plagiopyla binucleata – Agamaliev, Acta Protozool. , 17: 430–431; fig. 10 (original description, illustrated, no type material available).

2007: Plagiopyla binucleata Agamaliev, 1978 - Jankowski, Russian Acad. Sci. , p. 792 (revision).

Improved diagnosis ( Fig. 18M): Body length 80–100 µm, body width 60–70 µm. Somatic kineties: 60–70. Striated band present (estimated length: 62 µm), reaching the rear end. Two rounded, ovoid macronuclei (estimated size: 11 × 10 µm each) and a single intermediate, spherical micronucleus (estimated Ø: 3.5 µm, presumably of vesicular-type). One contractile vacuole with a single pore opening on the dorsal part of the cell, above the cytoproct suture (while the typical opening position is underneath). Cytoproct located on the dorsal part of the cell (estimated length: 17 µm), with one cytoproct-related ciliary row on its left. Extrusomes not discussed in the description.

Type locality/ecology and distribution: Periphyton on stones, in seawater of the Caspian Sea ( Agamaliev, 1978, 1983).