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

<p>
<italic>Hemicycliophora ahvasiensis</italic> n. sp., recovered from the rhizospheric soil of date palm in Khuzestan province, southwest Iran, is described and illustrated based upon morphological, morphometric and molecular data. The new species is characterized by its sheath, closely fitting most of the body, cuticle with or without numerous irregular lines, sometimes appearing as blocks in distal body region. Lateral field without discrete longitudinal lines, but often with continuous broken striae or anastomoses. Continuous lip region with single annulus, slightly elevated labial disc, stylet with posteriorly sloping knobs. Vulva with or without slightly modified lips, spermatheca with sperm and tail conoid, symmetrically narrowing at distal region to form a narrow conical region. Morphologically, the new species looks similar to <italic>H. indica</italic>, <italic>H. labiata</italic>, <italic>H. siddiqii</italic>, <italic>H. tenuistriata</italic> and <italic>H. typica</italic>. The latter species appears more similar to the new species under light microscopy, but could be separated using the scanning electron microscopy and molecular data. The new species was also compared with <italic>H. epicharoides</italic> and <italic>H. dulli</italic>, two species with close phylogenetic affinities to it. The phylogenetic relationships of the new species were reconstructed and discussed using partial sequences of the D2-D3 expansion segments of large subunit, and internal transcribed spacer regions (LSU D2-D3 and ITS rDNA). <italic>Hemicycliophora conida</italic>, the second studied species, was recovered from north Iran and characterized by morphological and molecular data.</p>
</abstract>

Hemicycliophora ahvasiensis n. sp., recovered from the rhizospheric soil of date palm in Khuzestan province, southwest Iran, is described and illustrated based upon morphological, morphometric and molecular data. The new species is characterized by its sheath, closely fitting most of the body, cuticle with or without numerous irregular lines, sometimes appearing as blocks in distal body region. Lateral field without discrete longitudinal lines, but often with continuous broken striae or anastomoses. Continuous lip region with single annulus, slightly elevated labial disc, stylet with posteriorly sloping knobs. Vulva with or without slightly modified lips, spermatheca with sperm and tail conoid, symmetrically narrowing at distal region to form a narrow conical region. Morphologically, the new species looks similar to H. indica, H. labiata, H. siddiqii, H. tenuistriata and H. typica. The latter species appears more similar to the new species under light microscopy, but could be separated using the scanning electron microscopy and molecular data. The new species was also compared with H. epicharoides and H. dulli, two species with close phylogenetic affinities to it. The phylogenetic relationships of the new species were reconstructed and discussed using partial sequences of the D2-D3 expansion segments of large subunit, and internal transcribed spacer regions (LSU D2-D3 and ITS rDNA). Hemicycliophora conida, the second studied species, was recovered from north Iran and characterized by morphological and molecular data.


<italic>Hemicycliophora ahvasiensis</italic> n. sp. (Nematoda: Hemicycliophoridae), and data on a known species, from Iran

Journal of Nematology

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


 n. sp. (Nematoda: Hemicycliophoridae), and data on a known species, from Iran

running-head

n. sp. (Nematoda: Hemicycliophoridae), and data on a known species, from Iran

Hemicycliophora ahvasiensis n. sp., recovered from the rhizospheric soil of date palm in Khuzestan province, southwest Iran, is described and illustrated based...

Hemicycliophora ahvasiensis n. sp. (Nematoda: Hemicycliophoridae), and data on a known species, from Iran

Published Online: Feb 02, 2021

Page range: 1 - 19

DOI: https://doi.org/10.21307/jofnem-2020-128

Keywords
D2-D3-LSU, Hemicycliophora, H. conida, ITS, morphology, morphometrics, phylogeny, sheath nematode, taxonomy

© 2021 Sedighe Azimi et al., published by Sciendo

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

Hemicycliophora ahvasiensis n. sp. (Nematoda: Hemicycliophoridae), and data on a known species, from Iran

Published Online: Feb 02, 2021

Page range: 1 - 19

DOI: https://doi.org/10.21307/jofnem-2020-128

KeywordsD2-D3-LSU, Hemicycliophora, H. conida, ITS, morphology, morphometrics, phylogeny, sheath nematode, taxonomy

© 2021 Sedighe Azimi et al., published by Sciendo

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

Keywords
D2-D3-LSU, Hemicycliophora, H. conida, ITS, morphology, morphometrics, phylogeny, sheath nematode, taxonomy