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Description of Deladenus hyrcanus sp. n. (Tylenchomorpha, Neotylenchidae) from Iran

Mohammad Esmaeil Agh Atabai

Mohammad Esmaeil Agh Atabai

Department of Plant Protection, Faculty of Plant Production, Gorgan University of Agricultural Sciences and Natural ResourcesGorgan, Iran
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Agh Atabai, Mohammad Esmaeil
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Farzad Aliramaji

Farzad Aliramaji

Department of Plant Protection, Faculty of Plant Production, Gorgan University of Agricultural Sciences and Natural ResourcesGorgan, Iran
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Aliramaji, Farzad
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Ebrahim Shokoohi

Ebrahim Shokoohi

Department of Biochemistry, Microbiology and Biotechnology, University of LimpopoSouth Africa
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Shokoohi, Ebrahim
  
19 set 2025
Description of Deladenus hyrcanus sp. n. (Tylenchomorpha, Neotylenchidae) from Iran's Cover Image
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Categoria dell'articolo: Research Paper
Pubblicato online: 19 set 2025
Ricevuto: 15 mar 2025
DOI: https://doi.org/10.2478/jofnem-2025-0037
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© 2025 Mohammad Esmaeil Agh Atabai et al., published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.

Figure 1:

Mycetophagous female of Deladenus hyrcanus sp. n. A: Entire body; B, C: Anterior end; D: Pharyngeal region; E: Posterior body region and part of the reproductive system; F: Lateral lines; G, H: Posterior body region and tail.
Mycetophagous female of Deladenus hyrcanus sp. n. A: Entire body; B, C: Anterior end; D: Pharyngeal region; E: Posterior body region and part of the reproductive system; F: Lateral lines; G, H: Posterior body region and tail.

Figure 2:

Mycetophagous female of Deladenus hyrcanus sp. n. A, C: Anterior region (pharynx); B: Anterior region (stylet, secretory-excretory pore, median bulb and part of pharynx); D: Anterior region (stylet); E: Posterior part of reproductive system containing crustaformeria, uterus, vulva; F, G: Posterior part of the body; H, I: Lateral lines. Abbreviation: cr = crustaformeria; dgo = dorsal gland orifice; ep: secretory-excretory pore; hm = hemizonid; nr: nerve ring; pij = pharyngo-intestinal junction; pgn: pharyngeal gland cell nucleus; sp: spermatheca; vgo = ventral glands orifice; ut = uterus; vu = vulva. all scale bars = 10 μm.
Mycetophagous female of Deladenus hyrcanus sp. n. A, C: Anterior region (pharynx); B: Anterior region (stylet, secretory-excretory pore, median bulb and part of pharynx); D: Anterior region (stylet); E: Posterior part of reproductive system containing crustaformeria, uterus, vulva; F, G: Posterior part of the body; H, I: Lateral lines. Abbreviation: cr = crustaformeria; dgo = dorsal gland orifice; ep: secretory-excretory pore; hm = hemizonid; nr: nerve ring; pij = pharyngo-intestinal junction; pgn: pharyngeal gland cell nucleus; sp: spermatheca; vgo = ventral glands orifice; ut = uterus; vu = vulva. all scale bars = 10 μm.

Figure 3:

Bayesian 50% majority rule consensus tree of Deladenus hyrcanus sp. n. based on 28S rDNA D2-D3 segment sequences under GTR + I + G model. Bayesian posterior probability values more than 0.50 are given for appropriate clades. The new sequence is indicated in bold.
Bayesian 50% majority rule consensus tree of Deladenus hyrcanus sp. n. based on 28S rDNA D2-D3 segment sequences under GTR + I + G model. Bayesian posterior probability values more than 0.50 are given for appropriate clades. The new sequence is indicated in bold.

Morphometrics of Deladenus hyrcanus sp_ n_ All measurements in μm and in the form: mean ± S_D_ (range)_

Character Female
Holotype Paratypes
n 1 7
L 759 752 ± 31.5 (718–806)
a 31.6 21.8 ± 2.6 (17.5–24.8)
b 9.0 9.4 ± 0.8 (8.5–10.5)
b′ 3.8 4.2 ± 0.5 (3.8–5.1)
c 12.2 11.8 ± 0.8 (10.2–12.6)
c′ 3.9 3.9 ± 0.3 (3.5–4.4)
V 86.3 86.3 ± 0.6 (86–87)
Lip region height 1.5 1.7 ± 0.2 (1.5–2.0)
Lip region width 7.5 7.7 ± 0.4 (7–8)
Stylet length 9 8.7 ± 0.8 (7.5–10.0)
Stylet conus 3 3.2 ± 0.4 (2.5–3.5)
Excretory pore from anterior end 112.5 110 ± 3.8 (106–115)
Hemizonid from anterior end 111 108.5 ± 3.1 (106–113)
Pharynx 84 80.0 ± 4.9 (71–86)
Nerve ring from anterior end 83 77.7 ± 3.5 (73–83)
Pharynx overlapping 114 98.0 ± 14.1 (72–115)
Maximum body diam. 24 34.9 ± 4.9 (30–44)
Vulval body diam. (VBD) 23 24.9 ± 3.5 (21–31)
Vulva–body end 104 102.9 ± 3.5 (97–111)
Vulva to anus 42 38.8 ± 5.4 (28.5–46.0)
Anal body diam. 16 16.4 ± 1.2 (15.0–18.5)
Tail length 62 64.0 ± 4.3 (58–72)
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