Enchodorus dolichurus Vinciguerra 1976
Creators: name: Pourjam, Ebrahim
name: Pedram, Majid
name: Vinciguerra, Maria T.
name: Robbins, Robert T.
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Nematoda
Enoplea
Dorylaimida
Nordiidae
Enchodorus
Enchodorus dolichurus

description: Enchodorus dolichurus Vinciguerra, 1976 (Fig 2)
Measurements: See Table 2.
Females: nematodes of medium size, slightly curved ventrad after fixation. Body tapering towards both ends very gradually. Cuticle marked with slight transverse striae, 2.0-3.0 µm thick in the anterior region and at mid-body, and 4.0 µm anterior to anus. Lateral chords 24 - 25 % of corresponding body width. Lip region cap-like, 2.2 times as wide as high, well set off from the rest of body by a constriction; labial and cephalic papillae protruding, giving lips an angular aspect. Amphid fovea cup-shaped, opening at lips base, occupying 50-60% of corresponding body diameter. Odontostyle needlelike, about as long as lip width, with very small aperture. Odontophore rod-like, more than twice as long as odontostyle. Guiding ring double, the posterior one located at 7-9 µm from anterior end. Pharynx consisting of a slender but well muscled portion expanding gradually into the basal expansion, which occupies 35% of neck length. Pharyngeal gland nuclei located as follows: D: 71.5- 73.0%, AS1 and AS2: not seen; PS: 45.0-46.5%. Cardia cylindroid, about as long as wide (8-11 × 10 µm). Intestine simple, containing green material in almost all examined specimens. Genital system didelphic-amphidelphic, genital branches 180-225 µm long. Ovaries reflexed, 50-70 µm long. Oviduct 95-120 µm long, consisting of a slender distal part and of a well developed pars dilatata. Sphincter well developed between oviduct and uterus. Uterus 80-110 µm long, consisting of a wide proximal part with distinct lumen containing a mature egg in one female, 40-95 µm in size, and/or very small elliptic sperms (2 x 4 m) and of a narrower distal part. Vagina extending inwards for 50-55% of corresponding body width; pars proximalis about as long as wide, 17-20×17-22 µm; pars refringens in lateral view composed of two sclerotised pieces 3-4 µm long, and pars distalis 5-6 µm long. Vulva a transverse slit. Prerectum 3.9-4.8 times and rectum about as long as anal body width. Tail elongate conoid, almost filiform in its distal part, 4-7 times as long as anal body width.
Males: General morphology similar to that of females, with posterior region more ventrally curved. Genital system diorchic, with opposed testes. An adanal pair of male copulatory supplements located at 13-14 µm from cloacal opening and a series of 3-4 well spaced ventromedian supplements ending at 70-80 µm distance from cloacal opening. Spicules dorylaimoid, massive, 4.4-4.8 times as long as wide. Lateral guiding pieces 11 µm long. Tail convexconoid proximally, then almost filiform, 5-5.5 times as long as anal body width.
The morphometric and morphological characters of this population accord fairly well with the original data except for index c (see table 2), slightly smaller from that in original description (9.2-9.8 vs. 11-13). This is the first report of genus Enchodorus from Iran and of E. dolichurus after its first record in Italy.
A population of this species was found in superficial soil samples collected from Nahar Khoran forests, Gorgan, north of Iran, in association with mosses on March 2010.
description: Published as part of Pourjam, Ebrahim, Pedram, Majid, Vinciguerra, Maria T. & Robbins, Robert T., 2010, Enchodelus decraemerae sp. n. and Enchodorus dolichurus Vinciguerra, 1976 (Dorylaimida: Nordiidae), two rare species from Iran, pp. 191-197 in Russian Journal of Nematology 18 (2) on page 196, DOI: 10.5281/zenodo.10716327