A new species of stunt nematodes, Tylenchorhynchus iranensis sp. n. is described from the rhizosphere of faba bean (Vicia faba L.), from material collected in the Khuzestan province, southwestern Iran. The new species is characterized by the following combination of features: lateral fields with four non areolated incisures, cephalic region continuous to slightly offset and conformed by 6-7 fine annuli, stylet 15-18 μm long, post-anal intestinal sac extends into the entire tail cavity, epiptygma present, tail sub-cylindrical with a hemispherical to sub-hemispherical smooth terminus, 46-65 μm long and composed by 46-49 annuli. Molecular analysis based on 28S rRNA gene sequences placed T. iranensis sp. n. within a clade that contained representatives of the genus Tylenchorhynchus with high support.

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