<abstract xmlns="http://www.w3.org/1999/xhtml">

<p><italic>Diplogasteroides</italic> sp., a cryptic population of <italic>D. haslacheri</italic>, and <italic>Parasitorhabditis terebranus</italic> were reported from the frass of <italic>Monochamus alternatus</italic> galleries in dead <italic>Pinus thunbergii</italic> for the first time in Korea. Females and males are morphologically characterized and their linked DNA barcodes (18S-rRNA, 28S-rRNA, ITS-rRNA and COI) supplied. Females and males of the two species from Korea conform to the original species descriptions from Europe and the USA, with variations in a few details in morphometrics. Specifically, <italic>Diplogasteroides</italic> sp. is morphologically very similar to <italic>D. haslacheri</italic>. However, it cannot be designated as <italic>D. haslacheri</italic> due to the existence of cryptic species complex within the <italic>haslacheri</italic> group (<italic>D. haslacheri</italic>, <italic>D. asiaticus, D. nix, D. andrassyi</italic>, and <italic>D. carinthiacus</italic>), a condition requiring hybridization studies to test species identity within the group. Based on analysis of COI sequences, differences among these cryptic species are evident. Thus, in addition to hybridization tests, the COI might be a powerful DNA barcoding marker for the precise identification of these cryptic species within the genus. Additionally, this is the first molecular characterization of <italic>P. terebranus</italic>, and the species is herein recorded for the first time outside its type locality.</p>
</abstract>

Diplogasteroides sp., a cryptic population of D. haslacheri, and Parasitorhabditis terebranus were reported from the frass of Monochamus alternatus galleries in dead Pinus thunbergii for the first time in Korea. Females and males are morphologically characterized and their linked DNA barcodes (18S-rRNA, 28S-rRNA, ITS-rRNA and COI) supplied. Females and males of the two species from Korea conform to the original species descriptions from Europe and the USA, with variations in a few details in morphometrics. Specifically, Diplogasteroides sp. is morphologically very similar to D. haslacheri. However, it cannot be designated as D. haslacheri due to the existence of cryptic species complex within the haslacheri group (D. haslacheri, D. asiaticus, D. nix, D. andrassyi, and D. carinthiacus), a condition requiring hybridization studies to test species identity within the group. Based on analysis of COI sequences, differences among these cryptic species are evident. Thus, in addition to hybridization tests, the COI might be a powerful DNA barcoding marker for the precise identification of these cryptic species within the genus. Additionally, this is the first molecular characterization of P. terebranus, and the species is herein recorded for the first time outside its type locality.

Morphological and Molecular Characterization of <italic>Diplogasteroides</italic> sp., a Cryptic Population of the <italic>Haslacheri</italic> Group (Diplogastridae), and <italic>Parasitorhabditis terebranus</italic> (Rhabditidae) from Korea

Journal of Nematology

This work is licensed under the Creative Commons Attribution 4.0 International License.

Morphological and Molecular Characterization of  sp., a Cryptic Population of the  Group (Diplogastridae), and  (Rhabditidae) from Korea

Diplogasteroides sp., a cryptic population of D. haslacheri, and Parasitorhabditis terebranus were reported from the frass of Monochamus alternatus galleries...

Morphological and Molecular Characterization of Diplogasteroides sp., a Cryptic Population of the Haslacheri Group (Diplogastridae), and Parasitorhabditis terebranus (Rhabditidae) from Korea

Article Category: Research Paper

Published Online: May 23, 2023

Page range: -

Received: Jan 29, 2023

DOI: https://doi.org/10.2478/jofnem-2023-0017

Keywords
morphology, taxonomy

© 2023 Abraham Okki Mwamula et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Morphological and Molecular Characterization of Diplogasteroides sp., a Cryptic Population of the Haslacheri Group (Diplogastridae), and Parasitorhabditis terebranus (Rhabditidae) from Korea

Article Category: Research Paper

Published Online: May 23, 2023

Page range: -

Received: Jan 29, 2023

DOI: https://doi.org/10.2478/jofnem-2023-0017

Keywordsmorphology, taxonomy

© 2023 Abraham Okki Mwamula et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Keywords
morphology, taxonomy