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Two new and two known species of the genus Paraoxydirus Jairajpuri and Ahmad, 1978 (Nematoda: Dorylaimida) from Western Ghats of India

S. Kumar
S. Kumar
 and 
W. Ahmad
W. Ahmad
   | Sep 30, 2021
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Published Online: Sep 30, 2021
Page range: 292 - 314
Received: Oct 13, 2020
Accepted: Feb 15, 2021
DOI: https://doi.org/10.2478/helm-2021-0028
Keywords
© 2021 S. Kumar, W. Ahmad, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Fig. 1

Paraoxydirus gigas Jairajpuri, 1964. (A) Entire male; (B) entire female; (C) anterior region; (D) anterior end showing amphid; (E) expanded part of pharynx; (F) female genital system; (G) vulval region; (H) male posterior region; (I) spicule; (J) male posterior region; (K) female posterior region.
Paraoxydirus gigas Jairajpuri, 1964. (A) Entire male; (B) entire female; (C) anterior region; (D) anterior end showing amphid; (E) expanded part of pharynx; (F) female genital system; (G) vulval region; (H) male posterior region; (I) spicule; (J) male posterior region; (K) female posterior region.

Fig. 2

Paraoxydirus gigas Jairajpuri, 1964. (A, B) Anterior region; (C) anterior region showing amphid; (D) expanded part of pharynx & DN; (E) cardia; (F) vulval region; (G,H) female genital branch; (I) rectum; (J) spicule; (K) ventromedian supplements; (L) female tail; (M) lateral guiding piece. (Scale bars: A – F, I, J, M = 10 μm; G, H, K = 20 μm; L= 100 μm).
Paraoxydirus gigas Jairajpuri, 1964. (A, B) Anterior region; (C) anterior region showing amphid; (D) expanded part of pharynx & DN; (E) cardia; (F) vulval region; (G,H) female genital branch; (I) rectum; (J) spicule; (K) ventromedian supplements; (L) female tail; (M) lateral guiding piece. (Scale bars: A – F, I, J, M = 10 μm; G, H, K = 20 μm; L= 100 μm).

Fig. 3

Paraoxydirus novus Jairajpuri, 1965. (A) Entire female; (B) anterior region; (C) anterior region showing amphid; (D) expanded part of pharynx; (E) female genital system; (F) vulval region; (G) female posterior region.
Paraoxydirus novus Jairajpuri, 1965. (A) Entire female; (B) anterior region; (C) anterior region showing amphid; (D) expanded part of pharynx; (E) female genital system; (F) vulval region; (G) female posterior region.

Fig. 4

Paraoxydirus novus Jairajpuri, 1965 (A) Anterior region showing body pores; (B) anterior region; (C) anterior region showing amphid; (D) expanded part of pharynx; (E) spiral muscular sheath; (F) cardia; (G) vulval region; (H, I) female genital branch; (J) proximal part of ovary showing muscular sheath; (K) rectum; (L) tail. (Scale bars: A – G, K = 10 μm; H – J = 20 μm; L= 100 μm).
Paraoxydirus novus Jairajpuri, 1965 (A) Anterior region showing body pores; (B) anterior region; (C) anterior region showing amphid; (D) expanded part of pharynx; (E) spiral muscular sheath; (F) cardia; (G) vulval region; (H, I) female genital branch; (J) proximal part of ovary showing muscular sheath; (K) rectum; (L) tail. (Scale bars: A – G, K = 10 μm; H – J = 20 μm; L= 100 μm).

Fig. 5

Paraoxydirus indicus n. sp. (A) Entire female; (B) entire male; (C) anterior region; (D) anterior end showing amphid; (E) expanded part of pharynx; (F) female genital system; (G) vulval region; (H) male posterior region; (I) spicule; (J) male posterior region; (K) female posterior region.
Paraoxydirus indicus n. sp. (A) Entire female; (B) entire male; (C) anterior region; (D) anterior end showing amphid; (E) expanded part of pharynx; (F) female genital system; (G) vulval region; (H) male posterior region; (I) spicule; (J) male posterior region; (K) female posterior region.

Fig. 6

Paraoxydirus indicus n. sp. (A, B) Anterior region; (C) anterior region showing amphid; (D) lip region in frontal view (female, SEM); (E) lateral view showing amphid (SEM); (F) pharyngeal expansion and spiral muscle sheath; (G) cardia; (H) vulval region; (I, J) female genital branch; (K) coelomocyte cells; (L) ventromedian supplements series; (M) spicule; (N) lateral guiding piece; (O) female tail. (Scale bars: A - C, G - H, M, N = 10 μm; D, E (SEM) = 2 μm; F, I-L= 20 μm; O = 100 μm).
Paraoxydirus indicus n. sp. (A, B) Anterior region; (C) anterior region showing amphid; (D) lip region in frontal view (female, SEM); (E) lateral view showing amphid (SEM); (F) pharyngeal expansion and spiral muscle sheath; (G) cardia; (H) vulval region; (I, J) female genital branch; (K) coelomocyte cells; (L) ventromedian supplements series; (M) spicule; (N) lateral guiding piece; (O) female tail. (Scale bars: A - C, G - H, M, N = 10 μm; D, E (SEM) = 2 μm; F, I-L= 20 μm; O = 100 μm).

Fig. 7

Paraoxydirus vulvalpapillatus n. sp. (A) Entire female; (B) entire male; (C) anterior region; (D) anterior end showing amphid; (E) expanded part of pharynx; (F) female genital system; (G) vulval region; (H) male posterior region; (I) female posterior region; (J) male posterior region; (K) spicule.
Paraoxydirus vulvalpapillatus n. sp. (A) Entire female; (B) entire male; (C) anterior region; (D) anterior end showing amphid; (E) expanded part of pharynx; (F) female genital system; (G) vulval region; (H) male posterior region; (I) female posterior region; (J) male posterior region; (K) spicule.

Fig. 8

Paroxydirus vulvalpapillatus n. sp. (A, B) Anterior region; (C) anterior end showing amphid; (D) expanded part of pharynx, DN; (E) S1N1, S1N2; (F) spiral muscular sheath; (G) cardia; (H) vulval region, vulval papillae and pars refringens; (I) vulval papillae; (J, K) female genital branch; (L) ventromedian supplements series; (M) spicule; (N) lateral guiding piece; (O) rectum; (P) female tail. (Scale bars: A - I, M - O =10 μm; J - L= 20 μm; P = 100 μm).
Paroxydirus vulvalpapillatus n. sp. (A, B) Anterior region; (C) anterior end showing amphid; (D) expanded part of pharynx, DN; (E) S1N1, S1N2; (F) spiral muscular sheath; (G) cardia; (H) vulval region, vulval papillae and pars refringens; (I) vulval papillae; (J, K) female genital branch; (L) ventromedian supplements series; (M) spicule; (N) lateral guiding piece; (O) rectum; (P) female tail. (Scale bars: A - I, M - O =10 μm; J - L= 20 μm; P = 100 μm).

Fig. 9

Paraoxydirus vulvalpapillatus n. sp. (SEM). (A) Lip region in face view; (B) lip region in ventral view; (C) vulva in ventral view; (D) vulval papillae in ventral view; (E) male posterior ventral view, showing adclocal pair, caudal pores and cloacal opening; (F) female anal opening in ventral view. (Scale bars: A, C = 5 μm; B = 1 μm; D– F = 10 μm).
Paraoxydirus vulvalpapillatus n. sp. (SEM). (A) Lip region in face view; (B) lip region in ventral view; (C) vulva in ventral view; (D) vulval papillae in ventral view; (E) male posterior ventral view, showing adclocal pair, caudal pores and cloacal opening; (F) female anal opening in ventral view. (Scale bars: A, C = 5 μm; B = 1 μm; D– F = 10 μm).

Measurements of Paraoxydirus vulvalpapillatus n. sp. (All the measurements in μm except L in mm).

Locality Type population Karnataka population
Characters Holotype female Paratype females Paratype males Female
n 1 5 8 1
L 4.8 4.6± 0.3 (4.3 – 4.9) 4.4±0.5 (3.8 – 5.0) (n=3) 4.6
Body width at neck base 40 42±1.3 (41 – 44) 42.1±2.4 (38 – 45) 47
Body width at mid body 53 51.6±2.6 (47 – 55) 48.6±4.7 (41 – 56) 65
Body width at anus/ cloaca 31 28.6±2.4 (25 – 32) 36±2.2 (32 – 39) 32
a 92 88.9±4.9 (83.2 – 95.2) 84.4± 10.7 (69.3 – 92.7) (n=3) 71.6
b 14.3 14.1± 0.6 (13 – 15) 14.1± 0.8 (13 – 15) (n=3) 13.2
c 15 13.9±0.3 (13.5 – 14.3) 14.2±5.0 (8.1 – 20.3) (n=3) 14.9
c’ 10.5 11.2± 1.2 (9.7 – 12.6) 9.8± 3.6 (6.8 – 14.8) (n=3) 9.8
V 36.3 37.8± 1.6 (35.6 – 39.5) - 41.6
G1 10.2 9.2± 1.9 (6.6 – 13.3) - 6.9
G2 10.5 11.2± 0.7 (10.2 – 11.7) - 7.6
Lip region width 10 10.6±0.5 (10 – 11) 10.3±0.5 (10 – 11) 10
Lip region height 4 4.2±0.7 (3 – 5) 4.5±0.5 (4 – 5) 3
Amphid aperture width 5 5.0±0.6 (4 – 6 ) 6.3±0.7 (5 – 7) 5
Odontostyle length 5 5.2±0.4 (5 – 6) 4.8±0.3 (4 – 5) 5
Odontophore length 11 11.5±0.7 (11 – 13) 12±0.7 (11 – 13) 11
Guiding ring from ant. End 5 5.2±0.4 (5 – 6) 5.3±0.5 (5 – 6) 4
Nerve ring from ant. End 143 149.4±2.9 (145 – 153) 145.1±6.1 (135 – 155) 142
Neck length 340 331.8±11.6 (317 – 352) 322.8±14.9 (297 – 339) 352
Expanded part of pharynx 90 93±10.4 (82 – 107) 86.3±10.6 (76 – 107) 138
Cardia length 13 15.6±2.2 (12 – 19) 13.1±2.5 (11 – 19) 15
Anterior genital branch 499 469.2±102.6 (288 – 575) - 320
Posterior genital branch 512 514±33.2 (492 – 580) - 356
Vaginal depth 30 30.2±0.7 (29 – 31) - 34
Vulva from ant. end 1770 1703±115.8 (1550 – 1896) - 1934
Prerectum length 455 373.7±42.5 (315 – 435) 486.7±61 (432 – 602) 290
Rectum length 37 36.6±2.7 (32 – 40) 46.7±2.6 (42 – 50) 43
Tail length 325 broken L = 310 – 365 341± 97(247 – 475) (n=3) (broken L= 185 – 279) 312
Spicule length - - 51±2.5 (46 – 54) -
Lateral guiding pieces - - 12.5±1.6 (11 – 16) -
Ventromedian supplements - - 11 – 14 -

Measurements of Paraoxydirus novus Jairajpuri, 1965 (All the measurements in μm except L in mm).

Locality Tamil Nadu population Karnataka population Goa population Assam population
Characters Females Females Females Females
n 6 4 5 5
L 3.9± 0.1 (3.7 - 4.0) (n=3) 3.4 ± 0.1 (3.3 - 3.5) 3.3±0.1 (3.2 - 3.5) (n=3) 3.2± 0.1 (3.1 - 3.4) (n=3)
Body width at neck base 52.6±3.8 (50 - 61) 46.5±1.7 (44 - 48) 49.4±3.8 (43 - 54) 49.4± 4.3 (42 - 55)
Body width at mid body 61.1±3.8 (57 - 69) 57.7 ±3.4 (52 - 61) 59.8±5.9 (49 - 67) 55.4± 4.4 (50 - 62)
Body width at anus/ cloaca 32.5±1.6 (31 - 36) 31.7 ±1.1 (30 - 33) 31.2±1.5 (30 - 33) 29± 1.4 (27 - 31)
a 61.7± 3.9 (56.7 - 66.2) (n=3) 59 ±4.0 (55.6 - 65.8) 55.3 ± 2.3 (52.4 - 58) (n=3) 58.7 ± 5.3 (53 - 68.2) (n=3)
b 11.7± 0.4 (11 - 12.2) (n=3) 10.6±0.2 (10.2 - 10.8) 10±0.4 (9.7 - 10.6) (n=3) 10.6 ± 0.5 (9.9 - 11.2) (n=3)
c 5.3± 0.2 (5.1 - 5.4) (n=3) 7.3±1.1 (6.3 - 9.1) 4.8±0.3 (4.5 - 5.2) (n=3) 4.6 ± 0.5 (4.0 - 5.4) (n=3)
c' 22.1± 1.9 (20 - 24.7) (n=3) 14.8 ±2.4 (11.2 - 17.1) 22.3±1.5 (20.3 - 23.7) (n=3) 24.3±3.2 (20.5 - 28.7) (n=3)
V 34.6± 1.1 (33.4 - 36.1) (n=3) 33.7 ±2.3 (29.7-35.3) 34.9±0.8 (33.8 - 35.8) (n=3) 33.8 ± 0.3 (33.4 - 34.2) (n=3)
G1 10.3, 9.7 10.4±0.6 (9.6 - 11.2) 11.2± 0.2 (11 - 11.4) (n=3) 9.1± 0.3 (8.9 - 9.5) (n=3)
G2 10.2 ± 0.4 (9.8 - 10.7) 11.1 ±1.2 (9.8 - 13.0) 11.4± 0.6 (10.5 - 12) (n=3) 9.3 ± 0.1 (9.2 - 9.5) (n=3)
Lip region width 12.3±0.5 (12 - 13) 11.2 ±0.4 (11 - 12) 11 10.4± 0.5 (10 - 11)
Lip region height 5 4.5±0.5 (4 - 5) 4.6±0.5 (4 - 5) 4.7 ± 0.4 (4 - 5)
Amphid aperture width 6.6±0.4 (6 - 7) 5 5.2 ±0.4 (5 - 6) 6
Odontostyle length 7 7.3±0.4 (7 - 8) 7 6.8 ±0.2 (6 - 7)
Odontophore length 17±0.5 (16 - 18) 17.5±0.5 (17 - 18) 16.5±1.1 (15 - 18) 15± 1.9 (12 - 17)
Guiding ring from ant. End 8.5±0.8 (8 - 10) 8 8±0.9 (7 - 9) 7.2± 1.0 (6 - 9)
Nerve ring from ant. End 146.1±3.3 (142 - 151) 137.7 ±2.3 (135 - 140) 141±1.4 (140 - 144) 126± 5.7 (115 - 130)
Neck length 328±16.6 (303 - 348) 318.5±2.9 (314 - 321) 331.6± 14.1 (319 - 358) 304.8± 6.2 (294 - 311)
Expanded part of pharynx 104.3±9.1 (86 - 114) 110±6.1 (105 - 120) 113±12.1(101 - 135) 114.8± 8.8 (105 - 130)
Cardia length 15.3±1.5 (14 - 18) 16.7 ±0.8 (16 - 18) 13.6±1.9 (11 - 16) 15.8± 1.0 (15 - 17)
Anterior genital branch 367.2±27.2 (341 - 418) 354.2±24.3 (330 - 381) 375±21.4 (341 - 396) 298± 12.1 (274 - 306)
Posterior genital branch 374.8±37.6 (314 - 434) 378.2±42.7 (336 - 442) 375±20.4 (345 - 406) 308.4± 13 (284 - 318)
Vaginal depth 36.3±1.5 (34 - 38) 34.5±0.5 (34 - 35) 34.4±0.5 (34 - 35) 31.7 ± 1.3 (30 - 33)
Vulva from ant. end 1296.8± 84 (1161 - 1413) 1144.4±76 (1019 - 1226) 1197.4±115.6 (1063 - 1382) 1095± 62.9 (1024 - 1167)
Prerectum length 442.6±24.1 (408 - 475) 420.7±34.4 (396 - 480) 385.6±61.4 (283 - 448) 384± 56.1 (298 - 435)
Rectum length 40.6±1.6 (38 - 43) 43.2 ±1.9 (41 - 46) 43±2.4 (40 - 45) 40.2± 3.2 (35 - 45)
Tail length 736± 40.9 (695 - 792) (n=3) 469.7±66.2 (370 - 550) 694±62.5 (610 - 760) (n=3) 750.6± 44.1 (697 - 805) (n=3)
broken L= (230 - 623) (broken L) broken L = (495,560) broken L =620,635

Measurements of Paraoxydirus indicus n. sp. (All the measurements in μm except L in mm).

Locality Type population Kerala population
Characters Holotype female Paratype females Paratype males Female
n 3 9 1
L 4.0 4.0 ± 0.4 (3.6 – 4.6) 3.8 ± 0.1 (3.7 – 4.0) (n = 4) 4.8
Body width at neck base 48 50 ± 2.2 (48 – 53) 47 ± 2.4 (44 – 51) 60
Body width at mid body 56 58 ± 2.4 (55 – 61) 49.1 ± 3.7 (44 – 55) 67
Body width at anus/ cloaca 30 31 ± 1.4 (30 – 33) 33.8 ± 1.8 (31 – 36) 32
a 72.8 70.4 ± 4.5 (66.1 – 76.6) 78.7 ± 4.2 (72.8 – 82.2) (n = 4) 71.5
b 12.2 11.2 ± 0.7 (10.4 – 12.2) 11.5 ± 0.6 (11 – 12.5) (n = 4) 13.2
c 5.4 6.3 ± 0.4 (5.85 – 6.6) 5.4 ± 0.2 (5.2 – 5.7) (n = 4) 5.4
c’ 24.9 20.7 ± 0.5 (20 – 21.3) 21.2 ± 1.5 (19.4 – 23.3) (n = 4) 27.9
V 32.1 32.8 ± 1.1 (31.2 – 33.6) - 30.6
G1 10.5 10.1 ± 0.4 (9.7 – 10.7) - 9.3
G2 12.7 12.1 ± 1.4 (11 – 14) - 11.3
Lip region width 13 13.6 ± 0.5 (13 – 14) 12.8 ± 0.6 (12 – 14) 12
Lip region height 5 5 ± 0.8 (4 – 6) 5.4 ± 0.5 (5 – 6) 5
Amphid aperture 8 8.3 ± 0.5 (8 – 9) 7.6 ± 0.8 (7 – 9)
Odontostyle length 7 7.5 ± 0.4 (7 – 8) 7.4 ± 0.4 (7 – 8) 7
Odontophore length 17 17.6 ± 0.5 (17 – 18) 17.3 ± 1.0 (16 – 19) 17
Guiding ring from ant. End 9 9.3 ± 0.5 (9 – 10) 8.3 ± 0.5 (8 – 9) 8
Nerve ring from ant. End 153 149.3 ± 6.0 (141 – 155) 146.5 ± 2.1 (142 – 149) 153
Neck length 334 361.6 ± 14.3 (347 – 381) 344.7 ± 15.4 (314 – 366) 362
Expanded part of pharynx 107 122.6 ± 6.6 (114 – 130) 114.3 ± 10.3 (102 – 129) 146
Cardia length 25 24 ± 2.2 (21 – 26) 22 ± 2.4 (17 – 25) 25
Anterior genital branch 429 415 ± 27.7 (388 – 453) - 445
Posterior genital branch 519 503 ± 114.2 (404 – 663) - 542
Vaginal depth 34 31.6 ± 1.2 (30 – 33) - 35
Vulva from ant. End 1310 1339 ± 100 (1217 – 1463) - 1464
Prerectum length 519 545.3 ± 41.9 (500 – 601) 532.5 ± 79.8 (412 – 660) 597
Rectum length 41 41.6 ± 0.5 (41 – 42) 46.7 ± 2.8 (44 – 52) 41
Tail length 748 642 ± 44.3 (602 – 704) (broken L) 704 ± 26.9 (671 – 746) (n = 4) broken L (565 – 680) 894
Spicule length - - 49.5 ± 2.2 (45 – 53) -
Lateral guiding pieces - - 13.7 ± 1.5 (12 – 16) -
Ventromedian supplements - - 12 – 15 -

Compendium of morphometrics of species belonging to the genus Paraoxydirus Jairajpuri & Ahmad, 1978 (Measurements in μm except L in mm)

Character species n L a b c c' v Lrd Odont. Neck Ph.exp. Abd Prerect. Tail length Vms Spicule length Geo. Dist. References
abnormus 4♀♀ 5.0-6.0 102-124 13-18 8-11 18-20 35-39 12 8 342-416 118-146 31-34 279-331 596-668 - - Karnataka- India Dhanam & Jairajpuri, 1998
3♂♂ 5.0-6.0 111-130 14-16 12-16 - - - 8 350-365 113-129 36-37 566-681 354-465 12-15 48-53
cavenessi 5♀♀ 1.9-4.0 59-78 6.5-11.7 5-10 13-21 35-44 10 5-7 252-350 95-140 19.4-28 175-311 252-588 - - Nigeria Ferris et al., 1980
3♂♂ 2.0-2.5 63-66 6.4-9.0 5-8 - - - - 280-315 100-144 - - 336-448 7-8 36-37
gigas 2♀♀ 3.8-4.5 65-66 12-13 10 - 40-42 11* 5* - - - - - - - Nainital- India Jairajpuri, 1964
233 3.7-4.3 61-86 12-13 11-12 13 - 11* 5* - - 30* 300* 390* 15 50
1♂ 3.7 88 13 14 - - - 6 - - - - 15 49 M.P.- India Siddiqi, 1966
1♀ 3.9 70 13 9 - 39 - 5-7 - - - - - - - UP-India Baqri & Jairajpuri, 1968
233 3.6-3.7 84-86 12.0-12.2 10-15 - - - - - - - - - 13 48-51
25♀♀ 3.7-4.3 72-83 11.2-12.9 11-17 14* 42-45 12* 6-7 320-350 140* 28-34 260-360 250-345 - - Several localities-India Jairajpuri & Ahmad, 1978
10♀♀ 3.7-4.0 66-79 11.5-12.9 10-16 13* - - 6-7 290-305 33-35 - 220-350 11-13 50-55
8♀♀ 4.1-4.6 77-85 13-15 7-8 18-21 35-42 10-11 5-6 304-326 93-108 28-31 260-303 425-604 - - Goa- India Present paper
5♀♀ 3.8-4.5 80-88 11-14 8-10 12-14 - 10-11 5 309-342 88-104 33-36 370-457 440-480 10-14 52-54
4♀ 3.3-4.5 64.4-73 11-13.7 9-11 10.7-15.4 36.3-40.4 10 5-6 302-341 85-118 28-32 220-319 300-478+ - - Assam-India Present paper
1♂ 3.5 71.3 10.7 10.6 10.3 - 10 6 325 113 32 280 330+ 12 57
magnus 6♀♀ 4.8-5.7 85-117 13-17 12-15 12.5 33-40 10 8 334-367 84-118 32.8 230 389-400 - - Bangladesh Timm, 1964
6♂♂ 4.4-4.9 87-103 14-15.4 17- 20 - - - - - - - - - 12-16 54-57
novus 2♀♀ 3.9-4.0 65-68 11-12 4-6 20 34-35 10** 7 - - 33* 17abd 615* - - Andaman- India Jairajpuri, 1965
5♀♀ 3.1-3.4 53-68 10-11 4.0-5.4 21-29 33-34 10-11 6-7 294-311 105-130 27-31 298-435 697-805 - - Assam-India Present paper
5♀♀ 3.2-3.5 52-58 10-11 4.5-5.0 20-24 34-36 11 7 319-358 101-135 30-33 283-448 610-760 - - Goa-India Present paper
6♀♀ 3.7-4.0 57-66 11 -12 5.1-5.4 20-25 33-36 12-13 7 303-348 86-114 31-36 408-475 695-792 - - Tamil Nadu Present paper
4♀♀ 3.3-3.5 55-66 10-11 6.3-9.0 11-17 30-35 11-12 7-8 314-321 105-120 30-33 396-480 370-550+ - - Karnataka-India Present paper
pelinus 3♀♀ 5.2-5.4 102-140 17-20 9-11 20 29-34 9 7 266-311 90-96 26 112-256 496-592 - - Philipines Ferris et al., 1980
2♂♂ 4.8-4.85 89-127 15.0-15.4 12-17 - - - - 311 96 - - 281-383 11-13 50-55
indicus sp.n. 4♀♀ 3.6-4.6 66-76 10.5-12.3 5.4-6.6 21-25 31-33 13-14 7-8 334-381 107-130 30-33 500-601 748 (602-704+) - - Tamil Nadu-India Present paper
9♂♂ 3.7-4.0 73-82 11.0-12.5 5.2-5.7 19-23 - 12-14 7-8 314-366 102-129 31-36 412-600 671-746 12-15 45-53
1♀ 4.8 71.5 13.2 5.4 28 30.6 12 7 362 146 32 597 894 - - Karnataka-India Present paper
vulvalpapillatus sp.n. 6♀♀ 4.3-4.8 83-95 13-15 13-14 10-13 36-39 10-11 5-6 317-352 82-107 25-32 315-435 325 (310-365+) - - Goa-India Present paper
8♂♂ 3.8-5.0 69-93 13.0-15.2 8-20 7-15 - 10-11 4-5 297-339 76-107 32-39 432-602 247-475 11-14 46-54
1♀ 4.65 72 13 15 9.8 42 10 5 352 138 31 290 312 - - Karnataka-India Present paper

Measurements of Paraoxydirus gigas Jairajpuri, 1964 (All the measurements in μm except L in mm).

Locality Goa population Assam population Nainital (type population) Bijnore population (After Baqri & Jairajpuri, 1968) others
Characters Females Males Females Male Females Males Female Males Females Males
n 8 5 4 1 2 2 1 2 25 10
L 4.3 ± 0.2 (4.1 - 4.6) 4.2 ± 0.3 (3.8 - 4.5) 3.9 ± 0.4 (3.3 - 4.5) 3.5 3.8 - 4.5 3.7 - 4.3 3.89 3.6, 3.7 3.7 - 4.3 3.7 - 4.0
Body width at neck base 44.2 ± 2.2 (42 - 49) 42.2 ± 1.0 (42 - 45) 46.2 ± 3.3 (42 - 51) 40 50* - - 50* -
Body width at mid body 54.4 ± 2.7 (50 - 59) 50.6 ± 2.3 (48 - 54) 57.2 ± 4.8 (52 - 62) 49 - - - -
Body width at anus/ cloaca 30 ± 1.1 (28 - 31) 34.7 ± 1.1 (33 - 36) 30.7 ± 1.6 (28 - 32) 32 30* - - 28 - 34 33 - 35
a 81.4 ± 3.2 (77 - 85.3) 83 ± 2.7 (80.5 - 87.7) 69.2 ± 3.4 (64.4 - 73) 71.3 65 - 66 61 - 86 70 84, 86 72 - 83 66 - 79
b 14 ± 0.5 (13.5 - 14.7) 13.1 ± 1.0 (11.3 - 14.1) 12.3 ± 0.9 (11.1 - 13.7) 10.7 12 - 13 12 - 13 12.8 12, 12.2 11 - 13 11.5 - 13
c 7.6 ± 0.3 (7.2 - 8.2) 9.2 ± 0.8 (8.2 - 10.3) 9.8 ± 0.8 (9.1 - 11.2) 10.6 10 11 - 12 9 10, 15 11 - 17 10 - 16
c' 19.2 ± 0.8 (18.2 - 20.6) 13.2 ± 0.7 (12.2 - 13.9) 13.2 ± 1.7 (10.7 - 15.4) 10.3 13 12 - - 14* 13.5*
V 38.7 ± 2.4 (34.8 - 42.1) - 37.8 ± 1.5 (36.3 - 40.4) - 40 - 42 - 39 - 42 - 45 -
G1 8.2 ± 1.0 (6.7 - 9.3) - 11.3 ± 1.2 (9.8 - 13) - - - - - 9 - 15 -
G2 8.3 ± 0.8 (7.4 - 9.6) - 12.5 ± 1.3 (10.6 - 14) - - - - - 9 - 18 -
Lip region width 10.2 ± 0.4 (10 - 11) 10.4 ± 0.5 (10 - 11) 10 10 - 11* - - 11* -
Lip region height 4.5 ± 0.5 (4 - 5) 4.2 ± 0.4 (4 - 5) 4 5 - 5* - - 4*
Amphid aperture width 6.5 ± 0.5 (6 - 7) 6.5 ± 0.5 (6 - 7) 6.2 ± 0.4 (6 - 7) 7 - 6* - - - -
Odontostyle length 5.1 ± 0.3 (5 - 6) 5 5.3 ± 0.5 (5 - 6) 6 - 5* - 5, 7 6 - 7 6 - 7
Odontophore length 12.2 ± 0.6 (11 - 13) 13 10.6 ± 0.9 (10 - 12) 11 - 10* - 8, 10 10 - 12 12 - 13
Guiding ring from ant. End 5 5 5.3 ± 0.5 (5 - 6) 6 - - - - 6* -
Nerve ring from ant. End 145.5 ± 7.1 (137 - 157) 148.2 ± 5.3 (141 - 157) 144.2 ± 1.9 (142 - 147) 140 - - - - 130*
Neck length 314.7 ± 7.2 (304 - 326) 321.8 ± 11.2 (309 - 342) 321.2 ± 15.5 (302 - 341) 325 - - - - 320 - 350 290 - 305
Expanded part of pharynx 101 ± 4.2 (93 - 108) 94.4 ± 5.8 (88 - 104) 101.5 ± 13.5 (85 - 118) 113 - - - - 130* -
Cardia length 14.3 ± 1.6 (12 - 17) 16.2 ± 0.8 (15 - 17) 17.2 ± 3.3 (13 - 21) 17 - 14* - - 20* -
Anterior genital branch 364.3 ± 38 (305 - 405) - 447.2 ± 60.6 (398 - 547) - - - - - - -
Posterior genital branch 372.4 ± 31.6 (320 - 410) - 495.2 ± 66 (405 - 590) - - - - - - -
Vaginal depth 29.4 ± 2.3 (27 - 34) - 31, 32 - - - - - 38* -
Vulva from ant. end 1708 ± 94 (1519 - 1795) - 1504.3 ± 199 (1242 - 1698) - - - - - - -
Prerectum length 277.1 ± 34.4 (260 - 303) 418 ± 29.3 (370 - 457) 271 ± 35.1 (220 - 319) 280 - - - - 260 - 360 -
Rectum length 34.5 ± 3.1 (30 - 39) 51.5 ± 2.7 (48 - 55) 37, 41 50 - 50* - - 29 - 36 -
Tail length 577.5 ± 13.3 (565 - 604) 454.6 ± 14.6 (440 - 480) 407.5 ± 65.9 (300 - 478) - - - - 250 - 345 220 - 350
(broken) broken
Spicule length - 52.7 ± 0.8 (52 - 54) - 57 - 50 - 48, 51 - 50 - 55
Lateral guiding pieces - 11.2 ± 1.5 (9 - 13) - 12 - - - - - 10 - 11
Ventromedian supplements - 10 - 14 - 11 - 15 - 13 - 11 - 13
eISSN:
1336-9083
Language:
English
Publication timeframe:
4 times per year
Journal Subjects:
Life Sciences, Zoology, Ecology, other, Medicine, Clinical Medicine, Microbiology, Virology and Infection Epidemiology
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