Lindia torulosa Dujardin, 1841

Min, Hee-Min Yang and Gi-Sik, 2023, New record of three monogononts (Rotifera: Monogononta) from islands of Korea, Journal of Species Research 12 (2), pp. 174-179 : 177-178

Lindia torulosa Dujardin, 1841 ( Figs. 3A , 4C, D )

ŤDÎẠÊḝ (ṵḑ)

Lindia torulosa Dujardin, 1841, p. 653 .

Notommata roseola Perty, 1850, p. 18 .

Notommata tardigrada Leydig, 1854, p. 39 .

Material examined. Soil sample from Jawol-ri , Incheon (37°15′43.8″N, 126°18′12.1″E), 26 Apr. 2021, Yong-Uk Ahn. Voucher Number: NIBRIV0000900972 .

Diagnosis. Illoricated body vermiform, transparent, elongate, 440 - 465 μm in length. Head with rostrum and pair of auricles. Retrocerebral organ sac-shaped and with dark color. One eyespot in the posterior part of brain. Stomach and intestine green and orange. Trunk with several transverse folds. Foot with two pseudosegments. Two conical toes, with blunt end. Trophi cardate. Fulcrum thin and elongated in dorsal view. Rami with alulae. Uncus with three teeth, median one largest. Manubrium thick and straight with crescent branch. Epipharynx consisting of a pair of L-shaped rods; each rod between a lamella with serrated anterior margin and leaf-shaped lamella.

Distribution. Cosmopolitan.

Remarks. Lindia torulosa is the most common species in the genus Lindia ( Segers, 2002) . This species is cosmopolitan and in Asia, it has been reported in China ( Wang, 1961) and India ( Sinha, 2014). The morphological characteristics of the Korean specimens were congruent with those of previous studies ( Koste and Shiel, 1990; Segers, 2002). Specially, all the specimens we observed had stomachs and intestines that were green and orange, but their retrocerebral organs were sometimes colorless.

Molecular data. A partial COI sequence (759 bp) was obtained from one specimen (GenBank accession number: OQ445412).

Family Notommatidae Hudson & Gosse, 1886 ṞÑÊḝǖ

Genus Monommata Bartsch, 1870 ṴȐÊḝẃ

Figures

Fig. 3. Line drawings of rotifers. A. Lindia torulosa Dujardin, 1841, dorsal view. B. Monommata maculata Harring & Myers, 1930, lateral view. Scale bars=A, B: 100 μm.

Fig. 4. SEM images of the trophi. A, B. Monommata maculata Harring & Myers, 1930. A. ventral view. B. dorsal view. C, D. Lindia torulosa Dujardin, 1841. C. dorsal view. D. epipharynx. Scale bars=A, C: 10 μm, B, D: 5 μm.