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<p>A new species of the genus <italic>Deladenus</italic>, <italic>D. gilanica</italic> n. sp. collected from Siahkal forests of Northern Iran, is described and illustrated. The new species is characterized by its 314 to 422-µm-long body, eight incisures in the lateral field, 7.5 to 8.0-μm-long stylet, position of the excretory pore, at the level of the hemizonid, both posterior to the nerve ring 61 to 76 µm from the anterior end, and conical tail with pointed tip. Based on morphology and morphometrics, the new species can be compared with eight known species of the genus: <italic>D</italic>. <italic>aridus</italic>, <italic>D</italic>. <italic>durus</italic>, <italic>D</italic>. <italic>obesus</italic>, <italic>D</italic>. <italic>oryzae</italic>, <italic>D</italic>. <italic>processus</italic>, <italic>D. wilsoni</italic>, <italic>D. proximus</italic>, and <italic>D. posteroporus</italic>. Evolutionary relationships of the new species with other <italic>Deladenus</italic> species were assessed with sequences of the D2 to D3 expansion regions of 28S rRNA and partial 18S rRNA gene. The phylogenetic analysis showed that <italic>D</italic>. <italic>gilanica</italic> n. sp. is genetically distinct from other included species. <italic>Deladenus gilanica</italic> n. sp. is a member of the <italic>D. siricidicola</italic> species complex and close to <italic>D</italic>. <italic>canii</italic>, <italic>D</italic>. <italic>nitobei</italic>, and <italic>D</italic>. <italic>siricidicola</italic>. Typologically, these species share the relative position of the excretory pore to the hemizonid.</p>
</abstract>

A new species of the genus Deladenus, D. gilanica n. sp. collected from Siahkal forests of Northern Iran, is described and illustrated. The new species is characterized by its 314 to 422-µm-long body, eight incisures in the lateral field, 7.5 to 8.0-μm-long stylet, position of the excretory pore, at the level of the hemizonid, both posterior to the nerve ring 61 to 76 µm from the anterior end, and conical tail with pointed tip. Based on morphology and morphometrics, the new species can be compared with eight known species of the genus: D. aridus, D. durus, D. obesus, D. oryzae, D. processus, D. wilsoni, D. proximus, and D. posteroporus. Evolutionary relationships of the new species with other Deladenus species were assessed with sequences of the D2 to D3 expansion regions of 28S rRNA and partial 18S rRNA gene. The phylogenetic analysis showed that D. gilanica n. sp. is genetically distinct from other included species. Deladenus gilanica n. sp. is a member of the D. siricidicola species complex and close to D. canii, D. nitobei, and D. siricidicola. Typologically, these species share the relative position of the excretory pore to the hemizonid.

Description of <italic>Deladenus gilanica</italic> n. sp. (Hexatylina: Neotylenchidae) isolated from wood of black pine in Northern Iran

Journal of Nematology

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

Description of  n. sp. (Hexatylina: Neotylenchidae) isolated from wood of black pine in Northern Iran

running-head

A new species of the genus Deladenus, D. gilanica n. sp. collected from Siahkal forests of Northern Iran, is described and illustrated. The new species is...

Description of Deladenus gilanica n. sp. (Hexatylina: Neotylenchidae) isolated from wood of black pine in Northern Iran

Published Online: Jul 28, 2020

Page range: 1 - 10

Received: Jan 12, 2020

DOI: https://doi.org/10.21307/jofnem-2020-065

Keywords
Molecular, Morphology, Morphometrics, Nematode, New species, rRNA gene

© 2020 Parisa Jalalinasab et al., published by Sciendo.

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

Description of Deladenus gilanica n. sp. (Hexatylina: Neotylenchidae) isolated from wood of black pine in Northern Iran

Published Online: Jul 28, 2020

Page range: 1 - 10

Received: Jan 12, 2020

DOI: https://doi.org/10.21307/jofnem-2020-065

KeywordsMolecular, Morphology, Morphometrics, Nematode, New species, rRNA gene

© 2020 Parisa Jalalinasab et al., published by Sciendo.

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

Keywords
Molecular, Morphology, Morphometrics, Nematode, New species, rRNA gene