Cephalodella catellina ( Mueller , 1786)

Yang, Hee-Min & Min, Gi-Sik, 2023, A new species of the genus Cephalodella (Rotifera, Monogononta) from Korea, with reports of four additional cephalodellid species, ZooKeys 1141, pp. 185-199 : 185

Cephalodella catellina ( Mueller, 1786)

Material examined.

Reservoir in Wanju-gun , Jeollabuk-do, Republic of Korea (35°50.196'N, 127°00.975'E), 27 Mar. 2022, Hee-Min Yang leg. NIBRIV0000896987, 1 female, glycerol permanent slide .

Remarks.

Korean specimens of C. catellina had morphological characteristics that were generally consistent with those reported in previous studies ( Koste and Shiel 1991; Nogrady and Pourriot 1995). The body was short and stout, and 100 μm in length (Fig. 5D ). The posterior end of the body bulging. The head was large and approximately one-third of its total length. The foot and toes were located ventrally. The two toes were short and symmetrical, 12-16 μm in length (Fig. 6C ). The two frontal eyes were red. The vitellarium had eight nuclei. The salivary glands were located under the mastax. Trophi was asymmetrical, virgate type C, and 25 μm in length. The fulcrum was straight and long, with a slightly expanded distal end. The manubria were asymmetrical and curved inward. The right manubrium was larger than left manubrium. Distal ends of both manubria had incomplete loop. The right ramus had tooth-like alula.

Molecular data.

Partial COI sequence was obtained from one Korean specimen (NIBR deposit number, NIBRGR0000649739; GenBank accession number, ON898532).

Figures

Figure 5. Line drawing of cephalodellid rotifers A Cephalodella tinca Wulfert, 1937 B C. gracilis (Ehrenberg, 1830) C C. auriculata (Mueller, 1773) D C. catellina (Mueller, 1786). Scale bars: 50 μm.

Figure 6. SEM image of the trophi of cephalodellid rotifers A Cephalodella auriculata (Mueller, 1773) B C. gracilis (Ehrenberg, 1830) C C. catellina (Mueller, 1786) D C. tinca Wulfert, 1937. Scale bars: 10 μm.