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Description of Prionchulus girchi sp. nov. (Nematoda: Mononchina) with additional data on two known species of the genus Prionchulus from Lorestan province, Iran

E. Bazgir
E. Bazgir
, 
A. Naghavi
A. Naghavi
 and 
Z. Zolfaghari
Z. Zolfaghari
   | Feb 10, 2021
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Article Category: Research Article
Published Online: Feb 10, 2021
Page range: 85 - 91
Received: Apr 27, 2020
Accepted: Dec 01, 2020
DOI: https://doi.org/10.2478/helm-2021-0011
Keywords
© 2021 E. Bazgir, A. Naghavi, Z. Zolfaghari, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Fig. 1

Prionchulus girchi sp. n. A: Entire female body; B: Neck region; C: Anterior end; D: Female reproductive system; E: vaginal region; F: Caudal region.
Prionchulus girchi sp. n. A: Entire female body; B: Neck region; C: Anterior end; D: Female reproductive system; E: vaginal region; F: Caudal region.

Fig. 2

A, B, G, J, M: Prionchulus fagi Zell, 1985. A: Anterior region; B: Sub ventral denticles; G: Amphidial aperture, J: Anterior genital branch, M: Caudal region, C, D, H, K, N: P. muscorum (Dujardin, 1845) Wu & Hopperli, 1929. C: Anterior region; D: Sub ventral denticles; H: Amphidial aperture, K: Anterior genital branch, N: Caudal region, E, F, I, L, O: P. girchi sp. nov. E: Anterior region; F: Sub ventral denticles; I: Amphidial aperture, L: Anterior genital branch, O: Caudal region. (Scale bar: A-I=10 μm; J-O=20 μm.)
A, B, G, J, M: Prionchulus fagi Zell, 1985. A: Anterior region; B: Sub ventral denticles; G: Amphidial aperture, J: Anterior genital branch, M: Caudal region, C, D, H, K, N: P. muscorum (Dujardin, 1845) Wu & Hopperli, 1929. C: Anterior region; D: Sub ventral denticles; H: Amphidial aperture, K: Anterior genital branch, N: Caudal region, E, F, I, L, O: P. girchi sp. nov. E: Anterior region; F: Sub ventral denticles; I: Amphidial aperture, L: Anterior genital branch, O: Caudal region. (Scale bar: A-I=10 μm; J-O=20 μm.)

Morphometrics of Prionchulus girchi sp. nov. from Lorestan, Iran. All measurements are in μm (except for L in mm) and are in the form: mean±s.d. (range).

Location Character* Chenar Shureh (Type) Imanabad
n Holotype Paratype (n=3) Female (n=2)
L 2.2 2.2 ± 0.8 (2.1 – 2.3) 2.1 , 2.1
a 30.7 28.7 ± 1.3 (26.6 – 30.7) 20.7 , 23.7
b 4.14 4.1 ± 0.1 (4.0 – 4.3) 4.0 , 4.3
c 18.9 17.7 ± 0.4 (17.0 – 19.0) 15.5 , 16.3
c' 3.6 3.3 ± 0.1 (3.0 – 3.6) 2.7 , 3.1
v 67.0 66.0 ± 0.8 (65.0 – 67.0) 65.0 , 66.0
G1 17.0 18.6 ± 1.1 (17.0 – 21.0) 22.0 , 22.0
G2 14.0 16.3 ± 2.1 (14.0 – 20.0) 19.0 , 20.0
Buccal cavity length 42.5 42.0 ± 0.4 (41.0 – 42.5) 40.0 , 43.0
Buccal cavity diameter 24.0 22.9 ± 0.3 (22.5 – 24.0) 23.0 , 24.0
Lip region width 43.0 43.3 ± 2.4 (43.0 – 44.0) 44.0 , 44.5
Neck length 527.3 526.6 ± 3.5 (522.0 – 530.0) 496.0 , 517.0
Nerve ring from anterior end 160.0 160.8 ± 0.8 (160.0 – 162.0) 146.0 , 155.0
Excretory pore from anterior end 177.0 177.3 ± 5.3 (170.0 – 185.0) 170.0 , 172.0
Amphidial aperture diameter 4.0 4.6 ± 0.3 (4.0 – 5.0) 4.5 , 5.0
Amphidial position from anterior end 17.0 18.6 ± 0.3 (17.5 – 19.0) 17.0 , 18.5
Tooth length 4.2 4.8 ± 0.1 (4.3 – 5.3) 4.5 , 5.3
Dorsal tooth from buccal base 32.5 32.6 ± 0.2 (32.0 – 33.0) 32.0 , 33.0
Body diameter at neck base 63.0 63.6 ± 4.4 (57.0 – 69.0) 70.8 , 92.3
Body diameter at mid body 71.0 76.3 ± 2.3 (71.0 – 79.0) 90.0 , 103.0
Body diameter at anal region 31.0 37.5 ± 3.3 (31.0 – 41.0) 44.0 , 48.0
Tail 115.0 124.6 ± 6.6 (115.0 – 135.0) 131.0 , 138.0

Morphometrics of Prionchulus fagi Zell, 1985 and P. muscorum (Dujard, 1845) Wu & Hoppli, 1929. All measurements are in μm (except for L in mm) and are in the form: mean±s.d. (range).

Species P. fagi P. muscorum
Location Hamvar-Kulivand Robatnamaki Imanabad
n Female (n=4) Female (n=4) Female (n=3)
L 2.8 ± 0.9 (2.7 –3.0) 2.1 ± 0.8 (1.9 – 2.2) 2.7 ± 0.2 (2.7 – 2.8)
a 27.0 ± 1.2 (26.5 –29.5) 21.8 ± 0.9 (20.0 – 23.5) 24.6 ± 0.4 (24.0 – 25.0)
b 4.2 ± 0.1 (4.0 – 4.4) 4.2 ± 0.1 (4.0 – 4.4) 4.6 ± 0.1 (4.4 – 4.8)
c 15.5 ± 0.8 (14.5 – 16.5) 16.9 ± 0.3 (16.2 – 18.5) 17.3 ± 0.4 (16.5 – 17.8)
c' 3.2 ± 0.1 (3.0 – 3.3) 2.9 ± 0.3 (2.4 – 3.7) 2.9 ± 0.1 (2.8 – 3.2)
v 65.8 ± 0.7 (64.0 – 66.5) 65.0 ± 0.7 (64.0 – 67.0) 64.6 ± 0.3 (64.0 – 65.0)
G1 19.3 ± 0.4 (18.5 – 21.0) 20.5 ± 1.2 (18.0 – 23.0) 22.0 ± 0.8 (21.0 – 23.0)
G2 18.8 ± 0.1 (18.5 – 19.0) 18.8 ± 0.7 (18.0 – 20.0) 17.6 ± 0.3 (17.0 – 18.0)
Buccal cavity length 48.0 ± 0.2 (47.5 – 49.0) 45.0 ± 1.8 (43.0 – 47.0) 47.5 ± 0.3 (47.0 – 48.0)
Buccal cavity diameter 27.3 ± 0.2 (27.0 – 28.0) 26.0 ± 0.9 (24.0 – 27.0) 24.3 ± 0.1 (24.0 – 25.0)
Lip region width 48.0 ± 1.2 (46.0 – 49.5) 45.5 ± 1.2 (43.0 – 47.0) 48.2 ± 0.8 (46.5 – 49.5)
Neck length 650.0 ± 15.2 (630.0 – 670.0) 504.5 ± 13.8 (490.5 – 519.0) 587.5 ± 6.5 (580.0 – 600.0)
Nerve ring from anterior end 173.0 ± 2.4 (170.0 – 182.0) 175.0 ± 11.2 (160.0 – 190.0) 182.6 ± 7.5 (173.0 – 195.0)
Excretory pore from anterior end 211.0 ± 1.8 (209.0 – 213.0) 206.0 ± 3.4 (200.0 – 210.0) 211.0 ± 4.5 (204.0 – 216.0)
Amphidial aperture diameter 5.2 ± 0.1 (5.0 – 5.40) 4.8 ± 0.2 (4.5 – 5.5) 5.8 ± 0.3 (5.5 – 6.3)
Amphidial position from anterior end 18.2 ± 0.2 (17.0 – 18.5) 16.0 ± 0.4 (15.0 – 17.0) 16.0 ± 0.2 (15.0 – 16.5)
Tooth length 10.0 ± 0.8 (9.5 – 11.0) 10.0 ± 0.1 (9.8 – 10.2) 9.7 ± 0.1 (9.5 – 10.0)
Dorsal tooth from buccal base 34.4 ± 0.2 (34.0 – 35.0) 32.2 ± 1.8 (29.2 – 34.0) 37.1 ± 0.5 (36.5 – 38.0)
Body diameter at neck base 96.0 ± 4.2 (90.0 – 101.5) 85.2 ± 4.1 (80.0 – 90.0) 91.0 ± 1.3 (88.5 – 92.5)
Body diameter at mid body 105.0 ± 1.8 (103.0 – 107.5) 99.2 ± 6.1 (92.0 – 110.0) 111.3 ± 0.5 (110.0 – 112.0)
Body diameter at anal region 58.2 ± 1.1 (57.0 – 59.5) 43.6 ± 5.2 (31.0 – 50.0) 54.5 ± 2.2 (52.0 – 57.0)
Tail 194.2 ± 3.1 (190.0 – 200.0) 126.0 ± 5.3 (117.0 – 136.0) 161.1 ± 4.3 (155.5 – 168.0)
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