Stephanella hina Oka, 1908

Chae, Hyun Sook, Kil, Hyun Jong & Seo, Ho Jin Yang and Ji Eun, 2024, Freshwater bryozoans of Korea-observations on living colonies and three new records, Journal of Species Research 13 (1), pp. 50-60 : 57

12. Stephanella hina Oka, 1908 ( Fig. 10 ) ÿũḓ끼ḇNj

Material examined. Andeok Reservoir, 29 May 2015; Changgi Reservoir, 25 October 2015; Sungrim Reservoir, 9 April 2016; Daewi Reservoir, 19 May 2016; Chopyong Reservoir, 2 August 2016.

Substratum. Rope.

Remarks. Stephanella hina is known as a species that is not easy to find a colony ( Hirose and Mawatari, 2011b). Instead, this species has rounded floatoblast unique in its shape, which is observed only in this species of all the freshwater bryozoans. Only in the Andeok Reservoir, a small colony with many rounded floatoblasts inside was collected ( Fig. 10A, B ). The transparent tubular zooids are embedded in the delicate gelatinous colony ( Fig. 10A ).

Distribution. Korea, Japan, and North America.

Figures

Fig. 10. Stephanella hina Oka, 1908. A, Colony (white arrow); B, Dorsal view, floatoblast. Scale bars:A =3 mm; B=100 μm.