Bicosoeca conica Lemmermann, 1914

Lee, Won Je, 2019, Small Free-Living Heterotrophic Flagellates from Marine Intertidal Sediments of the Sydney Region, Australia, Acta Protozoologica 58 (4), pp. 167-189 : 180

Bicosoeca conica Lemmermann, 1914

Figs 1m, 2q

Description: Cell is about 6 µm long located in a conical lorica, which is about 7 µm long. Two flagella of unequal length arise near the anterior end of the cell. The flagellum is about 3 times longer than the cell and beats with a sine-wave, and the posterior flagellum is slightly longer than the cell and attaches to the lorica. The lorica attaches to the substrate using a stalk, which is slightly longer than the lorica. One cell was observed at Watsons Bay.

Remarks: Generally, the observation is agreement with those of Larsen and Patterson (1990). Bicosoeca conica has been found at marine sites in Atlantic, Brazil and Turkey and previously reported lorica length is 2.5–5 µm ( Larsen and Patterson 1990, Patterson et al. 1993, Aydin and Lee 2012). This species is similar to B. epiphytica Hillard, 1971 , but can be distinguished by the dimension of the lorica (20–27.5 µm long).

Figures

Fig. 2. (a)–(b) Mastigamoeba psammobia, (a) general appearance of cell, note cytoplasms drawn from the posterior end, (b) general appearance of different cell and note pseudopodia. (c) Hexamita inflata, general appearance, note the nucleus. (d) Trepomonas agilis, general appearance of cell. (e) Chilomastix cuspidata, showing general appearance. (f) Stephanopogon sp., showing general appearance. (g) Saepicula pulchra, showing general appearance of cell. (h)–(j) Goniomonas amphinema. (h) Form I, (i) Form II, (j) Form III, note flagellar ar- rangement. (k) Roombia truncata, note attached cell to the substrate by the tip of the posterior flagellum, note extrusomes, surface striations and deep gullet. (l) Telonema subtilis, showing general appearance. (m) Harpagon descissus, general appearance of cell. (n)–(o) Spironema multiciliatum, (n) general appearance of cell, (o) note the kinetics. (p) Psammosa unguis, general appearance of cell. (q) Bicosoeca conica, general appearance of cell. (r) Apusomonas proboscidea, genera appearance of cell, note the V-shaped structure on dorsal face. All micrographs are DIC images except for (b), which is phase contrast images. Scale bar in (r) = 10 μm for all figures.