Paranais litoralis ( Müller, 1784 )

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 : 71-72

7. Paranais litoralis ( Müller, 1784) ( Fig. 7 )

ềödz님ȃmǵÑ (ṵAE)

Nais litoralis Müller, 1784: 120 , pl. 80, figs. 2 - 6.

Material examined. Cheonan-si (36°45′18.01″N, 127° 17′59.03″E), Korea; collected by JH Lee on 1 December 2014.

Deposition. NIBRIV0000879695.

World distribution. Cosmopolitan.

Diagnosis. Body smooth without papillate. No eyes. Ventral chaetae of II, 5 - 7 per bundle, with upper tooth 1.5 times longer than lower one ( Fig. 7A ), teeth length becoming gradually equal. Hair chaetae absent. Dorsal chaetae beginning from V, with upper teeth longer than lower, slightly thinner than ventral chaetae ( Fig. 7B ). Coelomocytes present.

Remarks. Paranais litoralis has been first recorded from Japan by Kondo (1936) and Yamaguchi (1953). This species is common in brackish water, and freshwater courses receiving saline pollution ( Van Haaren and Soors, 2012). The collected site is a spring water pool that is connected to the sea.

Figures

Fig. 7. Paranais litoralis(Müller, 1784). Scale bar=200μm.