Cryptodifflugia crenulata, Playfair, 1917

Bobrov, Anatoly & Mazei, Yuri, 2017, A review of testate amoeba genus Cryptodifflugia Penard, 1890 (Phryganellina: Cryptodifflugiidae) with a key to species, Zootaxa 4282 (2), pp. 292-308 : 298

C. crenulata Playfair, 1917

Fig 4 a

Difflugiella crenulata in Grospietsch, 1964 ; Difflugiella crenulata in Schönborn, 1965

Original description. Playfair 1917, P. 657, Table 38, Fig. 17.

Description. Shell small, ovoid sometimes pyriform with more or less distinct neck, circular in transverse section, crenulate, shell surface smooth, chitinous, hyaline or pale yellow, aperture circular, slightly smaller than the fundus.

Measurements. Shell length 15–20 µm, shell width 10–16 µm, aperture diameter 4 µm.

Habitat. Submerged freshwater plants, mosses and algae, Sphagnum mosses.

Geographical distribution. Cosmopolitan.

Figures

FIGURE 4. Different species of the genus Cryptodifflugia: a— C. crenulata, lateral view, b— C. crenulata glabra, lateral view, c— C. crenulata globosa, lateral view, d – f— C. horrida, lateral view of empty shell (d), lateral view of living cell (e), apertural view of living cell (f). a, c—after Palyfair 1917, b, d – f—after Schönborn 1965. Scale bar 20 µm.