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The World of Protozoa, Rotifera, Nematoda and Oligochaeta

Epitobrilus

Epitobrilus Tsalolikhin, 1981 (ref. ID; 1899)

Order Enoplida: Family Tobrilidae (ref. ID; 7912)
  1. Epitobrilus allophysis (Steiner, 1919) (ref. ID; 7912)
  2. Epitobrilus flagellatus (Andrassy, 1963) (ref. ID; 7912), (Andrassy, 1963) Tsalolikhin, 1981 (ref. ID; 1899)
  3. Epitobrilus medius (Schneider, 1916) (ref. ID; 7912)
  4. Epitobrilus meyli Tsalolikhin, 1981 (ref. ID; 1899, 7912)
  5. Epitobrilus parvipapillatus (Kreis, 1932) (ref. ID; 7912), (Kreis, 1932) Tsalolikhin, 1981 (ref. ID; 1899)
  6. Epitobrilus setosus (Altherr, 1963) (ref. ID; 7912), (Altherr, 1963) Tsalolikhin, 1981 (ref. ID; 1899)

Epitobrilus flagellatus (Andrassy, 1963) (ref. ID; 7912), (Andrassy, 1963) Tsalolikhin, 1981 (ref. ID; 1899)

Descriptions

This species is a smaller species characterized by a uniquely long tail. (ref. ID; 1899)

Epitobrilus meyli Tsalolikhin, 1981 (ref. ID; 1899, 7912)

Descriptions

This species is unique in the genus in having its first tooth in the middle of the exceptionally broad anterior stoma; it also has shorter outer labial setae (outer labial setae length 9.0-10.0 µm). (ref. ID; 1899)

Epitobrilus setosus (Altherr, 1963) (ref. ID; 7912), (Altherr, 1963) Tsalolikhin, 1981 (ref. ID; 1899)

Descriptions

  • Female: Body after fixation straight, tapering towards both ends, but more so towards the posterior end; maximum body width mostly at level of vulva. Cuticle 1.5- 2.0 µm thick; its layers faintly conspicuous, a thinner, lighter outer and slightly thicker and darker inner layer. Somatic setae distributed all over the body. Ten to twelve dorsolateral type II loxometanemes on each side of the body; the first situated close to the level of the nerve ring and the last in the tail; length of frontal and caudal filament about 95 and 90 µm, respectively. Mostly only two metanemes overlapping; in the first case, a caudal filament of anterior metaneme and frontal filament of following metaneme overlap or entire caudal and part of frontal filament of an anterior metaneme overlapping with the entire frontal and part of caudal filament of following metaneme; in the latter case, part of the caudal filament of a metaneme overlaps with part of the frontal filament of the next metaneme. Crystalloid bodies all over the body (most probably in the pseudcoelom), concentrated in the pharyngeal region. Lip region bluntly round, continuous with the rest of the body. Sensilla prominent, in two circles: an inner ring of six labial setiform papillae (1.5-2.0 µm long) and an outer ring of four shorter (5.0-6.0 µm) cephalic and six distinctly longer (12.0-15.0 µm) labial setae. Amphids stirrup-shaped, inconspicuous in most species, with transverse oval aperture, 14.1-16.7% corresponding body width; situated 0.8-1.3 lip region width from anterior body end; fusus amphidialis just behind fovea, as long as fovea. Cheilostome distinct, with weakly sclerotized lining. Rest of stoma consisting of two distinct parts, an anterior, funnel-shaped part consisting of the cup-shaped part of the stoma and two ventrosublateral pouches with well sclerotized wall, one on the right followed by the second on the left. Funnel-shaped part 1.9-2.3 times longer than wide. First tooth situated 20-24.5 µm from anterior body end, second tooth 13.0-17.0 µm posterior to the first. Pharynx cylindrical for most part of its length, slightly narrower at its posterior end; muscular. Nerve ring prominent, at about a third of pharyngeal length. Cardia 19-20x20-22 µm. Three prominent (15-22x18-25 µm) cells situated at the junction of the cardia with the pharynx base. A coelomocyte present anterior to these cells; coelomocytes longer than wide. Excretory pore situated about 140.0 µm from the anterior body end, at the level of the nerve ring. Ventral gland cells not observed. Cells of intestinal wall filled with brown granules. Intestine leading to 28.0-38.0 µm long rectum. Reproductive system didelphic, amphidelphic. Gonoducts situated ventral to the intestine. Uterus separated from the rest by a well developed sphincter. Vagina 19.0-23.0% corresponding body width; with well developed sphincter muscle. Vulva slightly anterior to mid-body. Only one egg at a time in uterus; eggs longer than wide. Tail elongate-conoid, gradually tapering till about 20 µm from posterior body end, slightly swollen and club-shaped more posteriorly; straight; about 6.0 rectal lengths long. Two to five setae on tail; subterminal and terminal seta absent. Caudal glands three, prominent; terminating in a short, tubular spinneret outlet that in some specimens is situated perfectly terminal on the blunt tail end. (ref. ID; 1899)
  • Male: Not found. (ref. ID; 1899)