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Table 2

Morphometric comparisons between our specimens of Neoechinorhyhchus johnii from Vietnam and those reported in previous descriptions from Japan and the Indian Ocean.

Characters Yamaguti (1939) Bilqees (1972) Gupta and Jain (1983) Present paper
East China Sea Karachi coast, Pakistan off Panaji, Bombay, India Pacific Ocean off Vietnam
Hosts Johnius goma Pseudosciaena diacanthus Pseudosciaena diacanthus Eleutheronema tetradactylum, Otolithes ruber, Johnius carouna, Johnius sp.
Specimens described 4 females 1 male, 4 females 6 of 51 males, 0 of 35 females 11 males, 32 females
Males
 Trunk L × W (mm) ____ 2.8 × 0.08 21.71–26.97 × 0.55–0.65 13.35–35.00 (25.26) × 0.35–0.75 (0.51)*
 Proboscis L × W ____ 80 × 80 101–142 × 129–191 120–157 (136) × 150–167 (146)
 Hook from ant. ____ 100, 30–40, 17–20 89–93, 20–24, 20–24 67–112 (93), 25–30 (27), 22–27 (25)
 Neck L × W ____ ____ 142–211 × 146–215 114–281 (207) × 146–279 (204)
 Prob. Receptacle L × W ____ 170 × ____ 406–536 × 130–163 300–572 (432) × 92–166 (135)
 Long lemniscus L × W ____ ca. 1.00 1.82-2.92 × 0.08-0.11 2.24–3.12 (2.51) × 0.06–0.10 (0.08)
 Short lemniscus L × W ____ ca. 1.00 1.82–2.92 × 0.08–0.11 2.27–3.12 (2.41) × 0.06–0.10 (0.07)
 Ant. Testis L × W (mm) ____ Ovate 0.13 × 0.10 1.95–3.44 × 0.23–0.44 2.75–8.12 (4.80) × 0.17–0.50 (0.32)
 Post. Testis L × W (mm) ____ Tubular 1.89 × 0.05 2.11–4.27 × 0.21–0.42 3.00–10.00 (5.75) × 0.20–0.62 (0.32)
 Cement gland L × W (mm) ____ 1.51 × 0.02 3.22–4.83 × 0.19–0.34 1.15–4.87 (3.01) × 0.12–0.34 (0.21)
 Cement gland nuclei ____ ____ 12–13 16–25 (20.3)
 Cement reservoir L × W ____ 310 × 50 406–504 × 195–293 364–624 (416) × 104–281 (187)
 Sperm vesicle L × W ____ 250 × 50 525–1008 × 146–228 520–1144 (888) × 94–250 (177)
 Saefftigen’s pouch L × W ____ ____ 601–780 × 81–146 593–936 (749) × 84–208 (146)
 Bursa L × W ____ Papillated 50 × 100 325–861 × 162–552 364–624 (489) × 353–676 (469)
Females
 Trunk L × W (mm) 40.00–63.00 × 0.95–1.10 45.00–61.00 × 0.70–1.13 ____ 10.00–120.00 (44.75) × 0.27–1.17 (0.64)
 Proboscis L × W ____ × 110–120 80–160 × 90–160 ____ 112–187 (154) × 120–182 (159)
 Hook from ant. 90–100, 21–24, 21–24 80–90, 50–60, 19–20 ____ 62–117 (102), 25–31 (27), 22-30 (26)
 Neck L × W 170–250 × 110–130 208–302 (246) × 146–281 (196) ____
 Prob. Receptacle L × W 400–520 × 90–140 38 × ____ ____ 255–551 (466) × 87–177 (129)
 Long lemniscus L × W 2.50–3.80 × 0.10–0.11 2.70–3.30 × ____ ____ 2.39–3.33 (2.87) × 0.006–0.18 (0.09)
 Short lemniscus L × W 2.50–3.80 × 0.10–0.11 2.70–3.30 × ____ ____ 2.39–3.17 (2.73) × 0.06–0.15 (0.08)
 Vagina length ____ 200–250 ____ 156–260 (209)
 Uterus length 250–480 × 80–125 300–400 ____ 250–572 (454)
 Uterine bell length ____ 140–170 × 100–160 ____ 250–624 (477)
 Reprod. syst. L (mm) ____ ____ ____ 0.67–1.51 (1.13)
 Egg L × W 33 × 18 29–30 × 20 33–38 × 20–22 27–45 (33) × 18–30 (24)
*

Range (mean).

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