Rotylenchus pini Mamiya, 1968 was reported from rhizospheric soils of Zoysia japonica in Korea. Females and males of the characterized population conform to the original species description from Japan and also to other subsequent species descriptions with variations in a few details in morphometrics including the existence of pharyngeal gland overlap in some specimen. Bayesian analysis of all the three DNA markers consistently grouped R. pini together with Rotylenchus species including R. zhongshanensis, a morphologically close species. Additionally, the newly obtained sequences of R. pini were found to be almost identical to the sequences assigned to Rotylenchus aff. devonensis in GenBank. These Rotylenchus aff. devonensis isolates might be representatives of R. pini populations. The current and previous phylogenetic studies supported by the recorded morphological plasticity within populations of the genus validate the proposed synonymy of Pararotylenchus with Rotylenchus.

Rotylenchus arsenjevi are reported for the first time in Korea. The Korean species differs slightly by having a hemispherical lip region and a slightly shorter tail than the original description (c=38.2-68.7 vs 36-41). Male was founded firstly from Korea and described. Geocenamus adakensis were collected a second time from Korea at a different locality and habitat. The measurements were compared with original description and the firstly collected specimen in Korea.

Hemicycliophora minora Wu, 1966와 Pratylenchoides ivanovae Ryss, 1980를 국내 미기록종으로 보고한다. 현재 국내에는 Hemicycliophora속에서 총 5종, Pratylenchoides속에서 총 3종의 선충이 보고되었으며, 이들 종에 대한 검색표를 첨부하였다. 아울러 주사전자현미경을 이용하여 Pratylenchoides utahensis Baldwin, Luc & Bell 와 Rotylenchus feroxcis Eroshenko의 형태적 특징을 추가적으로 기록하였다.