Metaurostylopsis cheni Chen, Huang, & Song, 2010

Kim, Kang-San, Park, Kyung-Min, Jung, Jae-Ho & Min, Gi-Sik, 2016, First description of three ciliates (Ciliophora: Stichotrichia) from Korea, Journal of Species Research 5 (3), pp. 468-476 : 469-473

publication ID	https://doi.org/ 10.12651/JSR.2016.5.3.468
DOI	https://doi.org/10.5281/zenodo.13799826
persistent identifier	https://treatment.plazi.org/id/03D487D1-3675-FFF3-FF47-9F4DFE84FA6B
treatment provided by	Felipe
scientific name	Metaurostylopsis cheni Chen, Huang, & Song, 2010
status

Treatment

( Table 1 View Table 1 ; Figs. 1 View Fig , 2 View Fig )

Diagnosis. Cell size 90120 × 4350 μm in vivo, flexible and yellow to greenish ( Fig. 1A View Fig , 2A, C View Fig ). Two types of cortical granules: large granules of oval shape, yellow to green in color, ca. 1.5 μm across, and distributed along with the cirral rows and dorsal kineties; small granules colorless and irregularly scattered, ca. 0.3 μm across ( Fig. 2D, F View Fig ). About 57 macronuclear nodules ( Table 1 View Table 1 ). Three frontal and three to five frontoterminal cirri; buccal and III/2 cirrus present; five to eight transverse cirri; seven to eleven midventral pairs, additional three to five unpaired ventral cirri in a longitudinal row; three to four left and right marginal rows; three bipolar dorsal kineties and additional two dikineties, dorsal cilia 35 μm long in vivo; caudal cirri lacking ( Table 1 View Table 1 ; Figs. 1B, C View Fig , 2G, H View Fig ).

Material examined. Mokpo Harbor (salinity, 21‰; 34º 47′N, 126º23′E), collected by KyungMin Park in June 2011. Yongyudong, Incheon (salinity, 30‰; 37°26′N 126°24′E), collected by KangSan Kim in April , 2015 GoogleMaps .

Deposition. protargolimpregnated specimens ( NIBR No. NIBRPR0000104109, NIBRPR0000104110) have been deposited in the National Institute of Biological Resources, Korea.

Habitat. Marine.

Distribution. China and Korea.

Remarks. There are six species in this genus: Metaurostylopsis marina Song et al., 2001 ; M. rubra Song & Wilbert, 2002 ; M. salina Lei et al., 2005 ; M. struederkypkeae Shao et al., 2008 ; M. cheni Chen et al., 2011 ; and M. antarctica Jung et al., 2011 . Metaurostylopsis marina is the type species ( Song et al., 2001; Berger, 2006; Shao et al., 2008; Chen et al., 2011; Jung et al., 2011). We used the morphometric data of the Mokpo population to make comparisons with congeners.

Metaurostylopsis cheni differs from M. struederkypkeae in the color of the cortical granules (yellowish to greenish vs. reddish) and in the number of cilia (35 vs. 48 in frontoterminal cirri; 711 vs. 1220 in midventral pairs; 35 vs. 69 cirri in midventral row; 34 vs. 57 in left marginal rows) ( Table 1 View Table 1 ) ( Shao et al., 2008).

Metaurostylopsis cheni and M. antarctica both have two types of cortical granules. However, Metaurostylopsis cheni can be separated from M. antarctica by the number of transverse cirri (58 vs. 2), left marginal rows (34 vs. 2), and right marginal rows (34 vs. 1) ( Table 1 View Table 1 ) ( Jung et al., 2011).