FIGURE 5 - uploaded by Wasim Ahmad
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Tylencholaimellus arabicus sp. n. A. Entire female; B. Anterior region; C. Anterior end showing amphid; D. Pharyngeal region; E. Pharyngeal bulb; F. Female genital system; G. Female posterior region.
Source publication
Two new and two known species of the dorylaimid nematode genus Tylencholaimellus Cobb in M.V. Cobb, 1915 are described and illustrated. Tylencholaimellus arabicus sp. n. collected from Saudi Arabia is characterized by having small sized body (L= 0.66–0.83 mm); outer cuticle with distinct transverse striations; inner layer thick with fine transverse...
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Citations
... Tylencholaimellus striatus is a very well known species of worldwide distribution and is probably the most cosmopolitan representative of the genus, being repeatedly recorded from many countries of Africa, America, Asia and Europe, where it dwells in a wide variety of habitats. The present Iranian females fit perfectly those of other described populations (for comparative purposes, see Goseco et al., 1975;Peralta & Peña-Santiago, 1995;Mushtaq et al., 2007;Zhang et al., 2012;Ahmad & Ahad, 2018). ...
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.
