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

<p>
<italic>Deladenus brevis</italic> n. sp. is described and illustrated based upon its morphological, morphometric, and molecular characters. The new species is mainly characterized by its small body size (367-454 µm long females and 350, 391 µm long males) and has small lateral vulval flaps. It is further characterized by having six lines in the lateral fields, cephalic region slightly expanded, narrower adjacent to the body, short 6 to 7 µm long stylet with three posteriorly sloped knobs, no post-vulval uterine sac (PUS), conical tail, narrowing to a rounded tip, and rare males with slender tylenchoid spicules and bursa reaching the tail tip. By having six lines in the lateral fields, the new species was compared with five known species of the genus, namely <italic>D. apopkaetus, D. cocophilus, D. durus</italic>, <italic>D. obtusicaudatus</italic>, and <italic>D. persicus</italic>, having comparable number (six or seven) of lines in the lateral fields. It was further compared with <italic>D. pakistanensis</italic> having lateral vulval flaps. The differences with above-mentioned species are discussed. In molecular phylogenetic analyses using nearly full length small and large subunit ribosomal DNA (SSU and LSU D2-D3 rDNA) and cytochrome c oxidase subunit I (<italic>COI</italic> mtDNA) gene sequences, <italic>D. brevis</italic> n. sp. formed clade with species of the genus with different clade support values in Bayesian inference.</p>
</abstract>

Deladenus brevis n. sp. is described and illustrated based upon its morphological, morphometric, and molecular characters. The new species is mainly characterized by its small body size (367-454 µm long females and 350, 391 µm long males) and has small lateral vulval flaps. It is further characterized by having six lines in the lateral fields, cephalic region slightly expanded, narrower adjacent to the body, short 6 to 7 µm long stylet with three posteriorly sloped knobs, no post-vulval uterine sac (PUS), conical tail, narrowing to a rounded tip, and rare males with slender tylenchoid spicules and bursa reaching the tail tip. By having six lines in the lateral fields, the new species was compared with five known species of the genus, namely D. apopkaetus, D. cocophilus, D. durus, D. obtusicaudatus, and D. persicus, having comparable number (six or seven) of lines in the lateral fields. It was further compared with D. pakistanensis having lateral vulval flaps. The differences with above-mentioned species are discussed. In molecular phylogenetic analyses using nearly full length small and large subunit ribosomal DNA (SSU and LSU D2-D3 rDNA) and cytochrome c oxidase subunit I (COI mtDNA) gene sequences, D. brevis n. sp. formed clade with species of the genus with different clade support values in Bayesian inference.

Description of <italic>Deladenus brevis</italic> n. sp. (Sphaerularioidea: Neotylenchidae) from Iran: a morphological and molecular phylogenetic study

Journal of Nematology

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

Description of  n. sp. (Sphaerularioidea: Neotylenchidae) from Iran: a morphological and molecular phylogenetic study

running-head

Deladenus brevis n. sp. is described and illustrated based upon its morphological, morphometric, and molecular characters. The new species is mainly...

Description of Deladenus brevis n. sp. (Sphaerularioidea: Neotylenchidae) from Iran: a morphological and molecular phylogenetic study

Published Online: Jul 28, 2020

Page range: 1 - 13

Received: Mar 26, 2020

DOI: https://doi.org/10.21307/jofnem-2020-062

Keywords
mtDNA, Free living mycetophagous phase, LSU rDNA D2-D3, Phylogeny, SSU rDNA, Taxonomy

© 2020 Fariba Heydari et al., published by Sciendo.

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

Description of Deladenus brevis n. sp. (Sphaerularioidea: Neotylenchidae) from Iran: a morphological and molecular phylogenetic study

Published Online: Jul 28, 2020

Page range: 1 - 13

Received: Mar 26, 2020

DOI: https://doi.org/10.21307/jofnem-2020-062

KeywordsmtDNA, Free living mycetophagous phase, LSU rDNA D2-D3, Phylogeny, SSU rDNA, Taxonomy

© 2020 Fariba Heydari et al., published by Sciendo.

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

Keywords
mtDNA, Free living mycetophagous phase, LSU rDNA D2-D3, Phylogeny, SSU rDNA, Taxonomy