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.

• Abraham Okki Mwamula(Department of Entomology, Kyungpook National University, Research Institute of Invertebrate Vector, Kyungpook National University) Corresponding author
• Ho-wook Lee(Department of Ecological Science, Kyungpook National University)
• Yi Seul Kim(Department of Entomology, Kyungpook National University, Research Institute of Invertebrate Vector, Kyungpook National University)
• Young Ho Kim(Department of Entomology, Kyungpook National University, Research Institute of Invertebrate Vector, Kyungpook National University, Department of Ecological Science, Kyungpook National University)
• Dong Woon Lee(Department of Entomology, Kyungpook National University, Research Institute of Invertebrate Vector, Kyungpook National University, Department of Ecological Science, Kyungpook National University)