Systematics of the genus Tylolaimophorus de Man, 1880 (Nematoda Diphtherophoridae), with description of T. minor (Thorne, 1939) Goodey, 1963 from Iran Author Ghaderi, Reza Author Asghari, Ramezan Author Eskandari, Ali text Zootaxa 2020 2020-03-24 4755 2 322 340 journal article 10.11646/zootaxa.4755.2.7 c6ae3424-0cb2-4be5-8b64-510468c9b86a 1175-5334 3733635 urn:lsid:zoobank.org:pub:321C36EA-3A65-4C43-80AE-5D2C536D2DF9 Tylolaimophorus kasbegi ( Eliashvili, 1986 ) Brzeski, 1994 After Eliashvili (1986) MEASUREMENTS Holotype female: L = 0.89 mm ; a = 18; b = 7.1; spear = 15 µm ; c = 25; V = 58. 2 paratype females : L = 0.81-0.89 mm ; a = 18-19; b = 6.8-7.1; body width = (45) µm; spear = 13-15 µm ; pharynx = (120) µm; tail = (35) µm; c = 24-25; c’ = (1.0); V = 58-59. 3 paratype males : L = 0.82-0.89 mm ; a = 19; b = 6.5-7.1; body width = (45) µm; spear = 12-14 µm ; pharynx = (125) µm; tail = (32) µm; c = 24-30; c’ = (0.8); spicules = 31-34 µm ; gubernaculum = 12-13 µm . DESCRIPTION Female. Body cylindrical, ventrally bent. Body cavity filled with granular structures. Cuticle thin, with fine transverse striae. Lip region broadly rounded, not separated from the body contour. Spear typical of the genus, length equal to lip region width. Amphidial aperture ellipsoidal, barely discernable. Pharynx short; the basal bulb pyriform, 28-29 µm long. Vulva a transverse slit, vagina sclerotized. Ovaries paired, reflexed, oocytes arranged in one row. Tail short, broadly rounded, equal in length to anal body diameter. Male. Similar to female, spear slightly shorter. Spicules curved, with a hook-shaped process at the proximal end. Gubernaculum simple, thin, one-third of spicule length. Copulatory musculature capsule distinct. Seven supplements present, anterior to the cloaca, but rudimentary and hardly distinguishable. A cuticular process in the form of a spine observed in the cloacal region of one specimen. DIAGNOSIS AND RELATIONSHIPS Tylolaimophorus kasbegi has been differentiated from T. minor and T. indicus in regard to having longer body (0.8- 0.9 vs 0.4-0.6 and 0.4-0.5 mm , respectively) and shorter tail ( c = 24-25 vs 15-23 and 15-22) than both species, longer spear (13-15 vs 10-12) than T. minor , and longer spicules (31-34 vs 25 µm ) than T. indicus . DISTRIBUTION Described from the rhizosphere of herbaceous plants in Kasbegi district, Georgia ( Eliashvili 1986 ).