Digramma interrupta (Rudolphi, 1810)

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 : 69

1. Digramma interrupta (Rudolphi, 1810)

Dubinina, 1953 ( Fig. 1 ) ṣẄPÝŀ충 (ṵAE)

Ligula interrupta Rudolphi, 1810 .

Material examined. Chilgok-gun (36°00′37″N, 128° 23′39″E), Korea; by autopsy of freshwater fish; collected by YS Kang, DM Lee, SJ Choe and HS Park on 3 March 2016 .

Deposition. NIBRIV0000866465, NIBRIV0000866466.

World distribution. China, Japan, Russia and Korea.

Diagnosis. Creamy colored. Total length of the larva 335 - 780 mm (average: 441 mm), the total width 7.0 - 11.5 mm (average: 8.6 mm). The scolex part is slightly narrow, a single groove observed. The reproductive complex grooves are observed in two lines on the dorsal and ventral side (compared to one line in with genus Ligula ) and started from about 56 mm later from the scolex and extended to the posterior part of the body.

Remarks. The first description of Digramma interrupta (= Ligula interrupta ) was by Rudolphi (1810). The worms are found in the body cavity of cyprinids (eg. Hemiculter , Abramis , Carassius and common carps) in Korea, China, Japan and Russia.

Figures

Fig. 1. Cross section of Digramma interrupta (Rudolphi, 1810) Dubinina, 1953, larval worm. Scale bar=2 mm.