Ditylenchus anchilisposomus
(Tarjan, 1958) Fortuner, 1982
Photo Gallery- Konza Prairie

(Description- Zeidan & Geraert, 1991)
Females: (n = 8); L = 0.645 mm + 0.127 (0.505-850), a = 31 + 3 (27-34), b = 6.1 + 0.9 (4.7-7.1), b' = 4.8 + 0.9 (3.6-6.0), c =  16.3 + 1.9 (13.3-19.9), c' = 3.3 + 0.5 (2.7-3.9), V = 82 + 1 (81-84); stylet = 8.0 um + 0.5 (7.0-8.5); MB = 34 + 2 (30-36).
Males: Not found.

Females.  Body, 21 um + 4 (15-26) wide, slightly ventrally arcuate when relaxed.  Annuli 1.2 um + 0.3 (0.9-1.4) wide. Lateral field marked with very faint six lines which could hardly be detected in most of the specimens.  Lip region continuous with body contour, with anteriorly flat surface, 6.0 um + 0.5 (5.0-6.5) wide and 1.5-2.0 um high. Labial framework moderately sclerotized.  Stylet with almost two equal parts, with distinct, relatively large, rounded, 1.0-1.5 um across basal knobs.  Dorsal oesophageal gland orifice opens at 1.5 um + 0.5 (1.0 -2.0) behind stylet knobs.  Oesophagus 134 um + 10 (119-153) long with broad procorpus, moderately valvulate metacorpus, relatively short isthmus and long basal bulb with posterior part overlapping intestine dorsally over indistinct oesophao-intestinal junction.  Nerve ring and excretory pore at 71 um + 8 (58-87) and 90 um + 11 (77-105) from anterior end, respectively.  Deirids, hemizonid indistinct.

Female genital system anteriorly outstretched with 36 um + 10 (20-54) long post vulval-uterine sac occupying 1.8 + 0.3 (1.4-2.5) corresponding vulval body diameter.  Oocytes arranged in one or two files; the ovary runs along the ventral side of the intestine and in some females it is shifted to the dorsal side.  Spermatheca somewhat triangular in shape and empty in some females and collapsed in others.  Columellar part of the uterus with the typical four rows of four cells each in most females, in two females, the four cells at the ventral side surround a cavity with 4-6 large refractive enclosures.  Vagina 5.5 um + 5 (4.5-6.5) deep.  Tail conical, 40 um + 8 (32-54) long with rounded terminus.  Vulva-anus distance 77 um + 17 (57-106) long or less than two times tail length.

Males.  Not found.

Habitat and locality.  Collected from the rhizosphere of Citrus sinensis and Musa sp., in a fruit orchard on the Blue Nile river bank near Hantoub, Central Sudan.