Enchodelus macrodorus (de Man, 1880) Thorne, 1939

(Fig. 2)

DIMENSIONS

Females (n = 9): L = 1.56 ± 60.05 (1.47- 1.65) mm; a = 22.2 ± 1.94 (19.4-25.1); b = 4.7 ± 0.23 (4.4-5.2); c 75.2 ± 6.70 (59.1-81.2); c' 0.52 ± 0.04 (0.48-0.6); V 44.2 ± 1.11 (42.4-45.3); 1

14.6 ± 0.97 (13.2- 15.8); G2 = 14.8 ± 1.27 (12.1- 16.7); odontostyle = 41.2 ± 3.1 (33-43.2)!lm; odontophore 45.3 ± 6.2 (34-48)!lm; lip width

18.6 ± 0.64 (18-19.4)!lm; spear 86.8 ± 9.0 (78-92)!lm; tail = 20.7 ± 2.9 (18-22)!lm; prerectum = 199.8 ± 13.7 (180-249.6)!lm; rectum = 36.4 ± 2.2 (34.8-42)!lm.

DESCRIPTION

Female: Body ventrally curved upon flxation. Cuticle with minute transverse striae, flne radial striae visible especially on tail. Lateral pores visible throughout the body length. Lip region set off from body by slight depression. Amphids cup-shaped with slit like aperture. Spear provided with broad flanges at its base. Odontostyle and odontophore nearly equal in length. Guiding ring double, flXed ring at 22-23!lm from anterior end of body. Oesophagus suddenly enlarged slightly anterior to rniddle. Only three oesophageal gland nuclei are observed (one dorsal, two subventral). Cardia elongate. Prereetum four to flve times as long as rectum. Rectum about one anal body width long. Vulva a transverse slit, vagina extending over about half body width. Reproductive system amphidelphic, opposed with reflexed ovaries lying dorsally and ventrally to the oviduct. A weil developed sphincter present between uterus and oviduc!. Female tail hemispherical to convex conoid with weB developed anal muscles and two caudal pores on each side.

Vol. 15, nO 5. 1992 425

Male: Not found.

REMARKS

Specimens of Enchodelus macrodorus were collected from soil around roots of weeds and grasses from Saifulmuluk, Azad Kashmir. E. macrodorus is recorded for the first time in Pakistan. Measurements of these specimens close1y fit to the original description of E. macrodorus (de Man, 1880) Thome, 1939. The identification was confirmed by M. T. Vinciguerra.