کلیدواژهها
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description, LSU D2-D3, morphology, morphometrics, new species, taxonomy, Tylencholaimellus affinis, Tylencholaimellus
loofi, Tylencholaimellus paracinctus, Tylencholaimellus polonicus, Tylencholaimellus striatus
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چکیده
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Six species of the genus Tylencholaimellus, one new and five known, collected in virgin and cultivated soils of East
Azarbaijan province, Iran, are studied. Tylencholaimellus zeinabadensis sp. n. is morphologically characterised by its 1.2-1.7 mm long
body, lip region 10-13 μm wide and offset by deep and broad constriction, odontostyle 16-20 μm long, stylet 22-30 μm long, neck
186-234 μm long, pharyngeal bulb 30-43 μm long, anterior uterine sac 55-103 μm long or 0.9-1.7 corresponding body diam. long, V =
34-41, tail short and rounded to conoid (20-30 μm, c = 45-83, c = 0.5-1.0), spicules 39-50 μm long, and one or two ventromedian
supplements with hiatus. Molecular analyses using the D2-D3 expansion regions of the 28S rRNA gene sequences of the new species
confirmed the monophyly of this genus based upon currently available data. A population of T. affinis is described and illustrated, and
new data (morphometrics, pictures and distribution) are provided for T. loofi, T. paracinctus, T. polonicus and T. striatus.
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