گزارش گونه‏ ای از جنس نادر Nothocriconemoides Maas, Loof & De Grisse, 1971 (Nematoda: Criconematidae) از استان کرمان

The family Criconematidae with more than 400 valid species, is one of the largest families of root ectoparasitic nematodes, which Geraert divided them into five subfamilies and 18 genera. Half of the genera of this family have many species with worldwide distribution. Nothocriconemoides is a rare genus of the family and has only three known species. This genus is characterized by having females with fine longitudinal striae on the surface of the body annuli(crenate posterior margin of body annuli), lips with four distinct submedian lobes, the second offset collar-shaped cephalic annulus from third annulus, a closed vulva (with overhanging anterior lip in the type species), a conical tail and juveniles with crenated posterior side of body annuli and first annulus not offset collar-like. During a survey to identify plant-parasitic nematodes in rangelands and forests of Kerman province, Iran, in 2019 to 2023, a population of the genus was collected. This population has females with a length of 585-818 µm; cephalic region with four distinct and true submedian lobes, with three annuli, the first annulus disc-shaped and directed anteriorly, the second collar-shaped and less broad than the other two annuli; Stylet 93-108 µm long, pharynx 154-200 µm long, V= 90-93, tail length 22-31 µm with 3-5 telescopic rings, R = 62-70, RVan= 2-3, Rph= 15-20, Rex= 18-22, RV= 5-8, Ran= 3-5, VL/VB= 1.1-1.7 and the posterior margin of the juvenile annuli is deeply crenated. This population resembles C. decipiens, C. neoaxestis, C. amorphous, C. mongolensis, Nothocriconemoides lineolatus, N. crenulatus and N. hangzhouensis in having an offset cephalic region and longitudinal striae on the body annuli. It is distinguished from them by four distinct and true submedian lobes, the first cephalic annulus disc-shaped and the second collar-shaped offset, the number of body annuli, the body length, the length of stylet, position of secretory- excretory pore, closed vulva with anterior lip overhanging (distinct in most individuals), the short conical tail, V index and deep crenation of posterior margins of juveniles body annuli. This population was found only in one soil sample and is a candidate for introduction as a new species.