Table 2. Morphometrics of Mesodorylaimus chamoliensis Ahmad, 1995; M. keralaensis Ahmad & Ahmad, 2001 and M. longicaudatus Ahmad & Araki, 2003 (all measurements in µm except L in mm). Abbreviations: see Material and methods. Mesodorylaimus chamoliensis Ahmad, 1995Mesodorylaimus keralaensis Ahmad & Ahmad, 2001Mesodorylaimus longicaudatus Ahmad & Araki, 2003CharactersFemalesFemalesMalesFemalesn5666L0.78 ± 0.03 (0.74–0.82)0.97 ± 0.07 (0.85–1.09)0.90 ± 0.04 (0.86–0.96)1.22 ± 0.04 (1.12–1.26)a31.1 ± 1 (30.1–33.0)30.2 ± 2.9 (25.1–34.0)29 ± 1.3 (26.7–30.6)40.6 ± 1.6 (38.7–42.8)b3.8 ± 0 (3.8–3.9)5.4 ± 0.3 (4.9–5.8)4.9 ± 0.2 (4.6–5.2)4.4 ± 0.1 (4.2–4.6)c6.3 ± 0.4 (5.8–6.9)8.4 ± 0.8 (7.2–9.6)51.4 ± 3.8 (45.0–56.7)5.7 ± 0.5 (4.9–6.3)c’8.2 ± 0.7 (7.4–9.2)7.0 ± 0.5 (6.1–7.80.9 ± 0 (0.85–1.0)11.8 ± 1.3 (10.4–14.3)V50.8 ± 1.2 (49.0–52.5)43.6 ± 1.1 (41.6–44.9)–44.2 ± 0.8 (43.0–45.6)G110.2 ± 0.6 (9.5–11.0)15.6 ± 1.6 (12.4–17.7)–9.4 ± 1 (8.1–10.8)G210.5 ± 1.3 (8.4–12.6)14.1 ± 1.3 (12.6–16.1)–9.7 ± 0.4 (9.3–10.1)body diameter at pharynx base24 ± 1.4 (22–26)30.8 ± 0.6 (30.0–31.5)30.7 ± 1.7 (28.0–32.5)27.7 ± 0.7 (26–28)body diameter at mid body25.2 ± 1.7 (22.5–27.0)32.3 ± 1.5 (30.5–34.5)31.3 ± 1.6 (28.5–33.0)29.9 ± 1 (29.0–31.5)body diameter at anus15.2 ± 1 (14–16)16.8 ± 0.6 (16.0–17.5)19.2 ± 0.7 (18–20)18.3 ± 0.4 (18–19)lip region diameter8.7 ± 0.4 (8–9)9.7 ± 0.4 (9–10)9.8 ± 0.4 (9–10)9.9 ± 0.2 (9.5–10.0)lip region height3.6 ± 0.2 (3.5–4.0)3.3 ± 0.3 (3.0–3.5)3.2 ± 0.2 (3.0–3.5)2.8 ± 0.2 (2.5–3.0)amphid aperture diameter4 ± 0 (4–4)4.4 ± 0.2 (4.0–4.5)5 ± 0 (5–5)5 ± 0 (5–5)odontostyle length11 ± 0 (11–11)10.1 ± 0.3 (9.5–10.5)9.8 ± 0.2 (9.5–10.0)11.6 ± 0.4 (11–12)odontophore length14.8 ± 0.2 (14.5–15.0)16.5 ± 0.8 (16–18)15.2 ± 1.1 (14–17)16.7 ± 0.6 (16.0–17.5)guiding ring from anterior end7.1 ± 0.2 (7.0–7.5)7.8 ± 0.4 (7–8)7.8 ± 0.2 (7.5–8.0)7.8 ± 0.2 (7.5–8.0)nerve ring from anterior end84.2 ± 4.5 (76–88)80.2 ± 4.2 (73–85)83.2 ± 3 (78–86)109.3 ± 5.3 (103–118)neck length203.2 ± 8.5 (191–215)180.8 ± 4.5 (176–189)184.8 ± 7.2 (176–195)277.3 ± 5.8 (267–284)expanded part of pharynx79.2 ± 4.7 (74–87)68.2 ± 3.5 (64–74)68.5 ± 2.9 (64–72)122.3 ± 4.8 (113–128)cardia length15.9 ± 2.3 (11.5–18.0)9.1 ± 1.2 (8–11)11 ± 0.7 (10–12)17.4 ± 2.2 (14–20)anterior genital branch79.4 ± 5.9 (72–90)152.3 ± 19.3 (123–175)–114 ± 12.4 (100–131)posterior genital branch82 ± 9.7 (68–98)152.3 ± 19.3 (123–175)–118.5 ± 6.9 (104–125)vaginal depth12.7 ± 0.6 (11.5–13.0)16.2 ± 0.7 (15–17)–15.8 ± 0.6 (15.0–16.5)vulva from anterior end397 ± 22.3 (364–426)424 ± 28.9 (371–466)–537.8 ± 22.9 (494–568)prerectum length29 ± 2 (26–32)43.2 ± 5 (33–49)59.5 ± 10.5 (49–74)52 ± 9.4 (32–60)rectum length20 ± 1.4 (18–22)27.2 ± 1.5 (25–29)31.2 ± 2.8 (28–35)30.5 ± 1.7 (28–33)tail length123.2 ± 3.7 (118–129)116.7 ± 6.4 (104–124)17.7 ± 0.7 (17–19)215.7 ± 22.3 (192–257)spicule length––27.7 ± 0.7 (26–28)–lateral guiding pieces––8.7 ± 0.5 (8–9)–ventromedian supplements––12–14–

Published as part of Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma & Ahmad, Wasim, 2026, New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India, pp. 9 in European Journal of Taxonomy 1040 on page 9, DOI: 10.5852/ejt.2026.1040.3191, http://zenodo.org/record/18699669