Abstract
Two species of the genus Pungentus, one new and one known, collected in natural vegetation and cultivated soils in northwest of Iran, are studied. Pungentus sufiyanensis n. sp. is characterized by its 1.22 to 1.57 mm long body, offset lip region by a constriction and 7 to 9 μm broad, 18 to 21 μm long odontostyle, 304 to 348 μm long neck, 133 to 161 μm long esophageal expansion, mono-opisthodelphic female genital system without anterior uterine sac, slightly backward directed vagina, absence of pars refringens vaginae, V = 47−54, rounded-conoid caudal region (17.5–23 μm, c = 65–84, c´ = 0.7–1) with saccate bodies, and the absence of male. Molecular analysis, based on D2-D3 expansion segments of the 28S rDNA (LSU), confirms the monophyly of the family Nordiidae and suggests the monophyly of the genus Pungentus, with the new species forming a clade with other Iranian species. New data are presented for six Iranian populations of P. engadinensis, and an updated key for the identification of Pungentus species is also provided.
Highlights
The genus Pungentus is an interesting dorylaimid genus, often found in forest habitats of the Northern Hemisphere, and with very restricted presence in southern territories
Its taxonomy was updated by Álvarez-Ortega and Peña-Santiago (2014), who listed 16 valid species and other four inquirendae or incertae sedis and provided a key to their identification as well a compendium of their main morphometrics
Several Pungentus populations were collected in the course of a nematological survey conducted in natural and cultivated soils of northwest Iran (East–West Azarbaijan and Kurdistan provinces) to explore the dorylaimid diversity of this region
Summary
The genus Pungentus is an interesting dorylaimid genus, often found in forest habitats of the Northern Hemisphere, and with very restricted presence in southern territories. Its taxonomy was updated by Álvarez-Ortega and Peña-Santiago (2014), who listed 16 valid species and other four inquirendae or incertae sedis and provided a key to their identification as well a compendium of their main morphometrics. Solouki et al (2010) recorded P. engadinensis (Altherr, 1950) Altherr, 1952 and P. silvestris (de Man, 1912) Coomans and Geraert (1962) in [Uremia (West Azarbaijan) and Marand (East Azarbaijan) provinces, respectively], whereas, very recently, Heydari et al (2019) described a new species, P. azarbaijanensis, associated with grass in West Azarbaijan, and P. engadinensis in several locations of the country. Several Pungentus populations were collected in the course of a nematological survey conducted in natural and cultivated soils of northwest Iran (East–West Azarbaijan and Kurdistan provinces) to explore the dorylaimid diversity of this region. Using morphology, morphometric, and molecular methods and provide new data about P. engadinensis The objective of this work was to report Pungentus sufiyanensis n. sp. using morphology, morphometric, and molecular methods and provide new data about P. engadinensis
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