Helicotylenchus densibullatus Siddiqi, 1972 (Fig. 1, E–F and Image 3 A–B) Material examined: Five females, 31.xii.2009, coll. P. Bohra, Reg.No. IV/2329. Measurements: Females: L = 0.43–0.44 mm; a = 22–24; b = 4.7–6.2; c = 42–44; c´ = 0.76–0.90; V = 65–67. Description: Female: Body spirally coiled upon fixation. Lip region hemispheroid and marked by three distinct annules. Labial sclerotization moderate. Lateral fields marked by four incisures, outer ones slightly crenate. Stylet 21–23 µm long. Median oesophageal bulb spheroidal in shape. Excretory pore opposite to oesophago–intestinal junction. Ovaries paired. Intestine not exceeding into rectum. Tail dorsally convex–conoid to a short usually acute ventral projection, with 7–10 annules. Annules becoming slightly coarser ventrally towards distal end. Habitat and locality: Collected from soil around roots of Banana (Musa balbisiana) from Kakarwa district, Rajasamand, Rajasthan, India. Remarks: H.densibullatus is characterized in having basal knobs of stylet appearing to be amalgamated with the shaft, not distinctly marked off individually (hence specific name); it comes closer to H. indicus Siddiqi, 1963 which has narrow truricurate lip region, indistinct labial annules, a more conspicuous labial sclerotization, from H. elegans Roman, 1965 has well separated anteriorly cupped stylet knobs. Lip region bearing five or six annules.

Published as part of Bohra, Padma, 2012, Twelve species of nematodes: new records for India, pp. 2889-2899 in Journal of Threatened Taxa 4 (9) on page 2892, DOI: 10.11609/JoTT.o2703.2889-99, http://zenodo.org/record/4987130

{"references": ["Siddiqi, M. R. (1972). On the genus Helicotylenchus Steiner, 1945 (Nematoda: Tylenchida), with description of nine new species. Nematologica 18: 74 - 91."]}