Canda pecten Thornely, 1907

Chae, Hyun Sook, Kil, Hyun Jong & Seo, Ji Eun, 2016, Taxonomic study on bryozoans - new additions to the Korean fauna and new species of Petraliella from Seogwipo waters of Jeju Island, Journal of Species Research 5 (3), pp. 551-565 : 556-557

** 22. Canda pecten Thornely, 1907

빗Ý패ÑnjḇNj (신ḡ) ( Fig. 4 )

Canda pecten Thornely, 1907: 182 ; Harmer, 1926: 389; Lu, 1991: 49; Tilbrook, 2006: 54.

Material examined. NIBRIV0000707782, Geomeunyeo (underwater cave), 7 Jan. 2011 (B.S. Min; H.J. Yang) by SCUBA diving .

Substratum. Stones.

Description. Colony erect, branching; branches biserial, connected each other by rootlets given off proximally. Zooids rectangular, paralled­sided lateral walls, usually bifurcated at 3 rd ( Fig. 4A, B ). Gymnocystal area minimal. Cryptocyst smooth, well developed proximally, not developed distally at all. Opesia almost triangular, asymmetrical, tapering proximally, with edges serrated. One short spine on each distal corner ( Fig. 4C ). Scutum wanting. Frontal avicularia triangular, directed proximally; rostrum elongate. Ovicells ( Fig. 4D ) with broad fenestra, usually occurring in small groups on branch, often with a vestigial avicularium. Basal vibracula triangular, locat­ ed obliquely across basal surface.

Remark. Canda pecten is characterised by its lack of scutum, its asymmetrical opesia and its frontal avicularia above branch bifurcations ( Tilbrook, 2006). C. pecten is very similar to both C. retiformis (Pourtales, 1867) and C. clypeata (Haswell, 1880) , however it is clearly different from these species by having no scutum. The genus Canda Lamouroux, 1816 from Korea includes two species, C. pecten Thornely, 1907 and C. retiformis .

Distribution. Korea, Japan, China, Burma, Andaman Islands, Madagascar, Indonesia (Strait of Makassar and Java Sea), Solomon Islands.

Figures

Fig. 4. Canda pecten Thornely, 1907.A. zooids and avicularia. B. lateral walls. C. opesia and spines. D. ovicells. Scale bars: 100 μm (A­D).