Hemicytherura okuboi, Tanaka, Yusaku and Noriyuki, 2011

Ji, Su-Jung, Jung, Chuleui, Bang, Hyun Woo, Song, Min Ok, Jung, Jongwoo, Yoon, Seong Myeong, Lee, Seunghwan, Keum, Seoyoung, Yang, Hee-Min, Lee, Dongmin, Lee, Geon Hyeok, Oh, Jaeseok, Kim, Kichoon, Park, Hansol, Moon, Heejin, Joharchi, Omid, Kang, Yeseul, Eom, Keeseon S., Lee, Kyung Jin, Eun, Ye, Kim, Taeho, Karanovic, Ivana, Lee, Jeounghee, Choe, Seongjun & Min, Gi-Sik, 2023, Unrecorded species of Korean invertebrates discovered through the project of ‘ Discovery of Korean Indigenous Species’ II, Journal of Species Research 12 (1), pp. 68-89 : 82-83

31. Hemicytherura okuboi Tanaka, Yusaku and

Noriyuki, 2011 ( Fig. 31 )

²ƗflŦDḄḤṆḇNj (ṵAE)

Material examined. Yeosu-si (34°43.165′N, 128°1.421′ E), Korea; collected by I Karanovic on 20 August 2013.

Deposition. NIBRIV0000835143.

World distribution. Japan and Korea.

Diagnosis. Central area of four subcircular fossae (1I, 1II, 5II, 2) distinctly separated from surrounding fossae. Fossa 8 divides into 3 fossae (8 II, 8III and 8 IV); Fossa 9 rarely subdivided by thin murus. Subovate lateral outline. Dorsal margin gently arched; ventral margin almost straight; anterior margin obliquely rounded with four crenulations in lower half; posterior margin with caudal process moderately strong and subtriangular. Surface of fossae covered with remarkable honeycombed pattern.

Remarks. This species is very similar to H. kajiyamai Hanai, 1957 already reported from Korea. Hemicytherura okuboi differs from H. kajiyamai by completely subdivided fossae I and V.

Figures

Fig. 31. Hemicytherura okuboi Tanaka, Yusaku and Noriyuki, 2011. Right valve with labelled fossae.