Morphological and Molecular Phylogenetic Study of Longidorus Soosanae N. Sp. (nematoda: Longidoridae) from Golestan Province, Northern Iran

Longidorus soosanae n. sp. is described and depicted based on morphological and molecular criteria. It was recovered from the rhizosphere of Fagus sp. in Golestan province, northern Iran. The new species is primarily characterized by its anterior region of the body distinctly tapered from the guiding ring towards the anterior end, forming a bottle-shaped appearance. Further, it is characterized by medium-sized females ranging 5.2–7.5 mm long, the lip region not set-off from the rest of the body, flat at the apex and 15–17 μm wide, pocket-shaped amphidal fovea lacking distinct basal lobes, guiding ring at 31–39 μm distance from the anterior end, and an odontostyle and odontophore ranging 92–103 and 59–72 μm long, respectively. The pharyngeal bulb is 92–130 μm long, vulva at 45.8–52.6