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Morphological and molecular characterization of Mylonchulus laocaiensis sp. n. (Nematoda: Mylonchulidae) from Vietnam

Published online by Cambridge University Press:  19 November 2024

T.T.T. Vu Open the ORCID record for T.T.T. Vu [Opens in a new window] ,
T.M.L. Le  and
V. Peneva
T.T.T. Vu*
Affiliation:
Institute of Ecology and Biological Resources. Vietnam Academy of Science and Technology. 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam Graduate University of Science and Technology. Vietnam Academy of Science and Technology. 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam and
T.M.L. Le
Affiliation:
Institute of Ecology and Biological Resources. Vietnam Academy of Science and Technology. 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam Graduate University of Science and Technology. Vietnam Academy of Science and Technology. 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam and
V. Peneva
Affiliation:
Institute of Biodiversity and Ecosystem Research. Bulgarian Academy of Sciences. 1113 Sofia, 2, Y. Gagarin Street, Sofia, Bulgaria
*
Corresponding author: T.T.T. Vu; Email: [email protected]
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Abstract

Mylonchulus laocaiensis sp. n. recorded from Vietnam, is described and illustrated, and its phylogenetic relationship within the Mylonchulidae family and Mononchida order are analysed. The new species is characterized by medium body size (L = 1.0–1.5 mm); buccal cavity goblet shaped, 26–29 × 14–16.5 μm or 1.8 (1.7–1.9) times as long as wide; posterior position of dorsal tooth apex (79%–88% from the base of buccal cavity); a small subventral tooth present on subventral wall; pars refringens vaginae with faint and small (2.5 × 1.7 μm) teardrop-shaped pieces, short pars distalis vaginae; male with short spicules (54–57 μm) with rounded head. The molecular data (18S and 28S rDNA) are provided for the new species.

Keywords

morphologyMylonchulusmolecular phylogenytaxonomynew species
Type
Research Paper
Information
Journal of Helminthology , Volume 98 , 2024 , e75
Copyright
© The Author(s), 2024. Published by Cambridge University Press

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