Tylenchus leptosoma de Man, 1880

P. A. A. LOOF, 1971, FREELIVING AND PLANT PARASITIC NEMATODES FROM SPITZBERGEN, COLLECTED BY MR. H. VAN ROSSEN, Mededelingen Landbouwhogeschool Wageningen 71, pp. 1-86 : 36

Tylenchus leptosoma de Man, 1880 .

Females (n = 30): L = 0.61 mm (0.46-0.75); a = 52 (38 -64); b = 6.1 (5.4-7.4); c = 2.6 (2.2-3.0); V = 47 (43-52).

Males (n = 2): L = 0.59 -0.74 mm; a = 70- 75; b = 5.5-5.8; c = 2.7.

Body annulation extremely fine, perceptible only in anterior part of neck. Lip region smooth, nearly semiglobular. Spear very indistinct. Median bulb of oesophagus located at 38 -45 % of neck length from head end. Isthmus very long and thin. A distinct hemizonid is present just behind middle of isthmus. Vulva tranverse; vaginal walls not thickened. No posterior uterine branch. Vagina directed obliquely anteriad. Dimensions of an intra-uterine egg: 79 x 9 u.. Anus indistinct, very difficult to detect in specimens that do not lie exactly in lateral position. The tail measures 22-41 anal body widths in the female, 30- 35 in the male.

This species too is very common and widespread on Spitzbergen. Found in samples 3, 7, 8, 10, 15, 20, 21, 23, 24, 25, 26, 27, 28, 29, 30, 31, 33, 34, 35, 36, 37, 38, 39, 40, 41, 43, 44, 46, 47, 48, 49, 52, 53, 54, 55, 61, 62, 63, 64, 68, 66 and 69.