Published August 26, 2012 | Version v1

Helicotylenchus talonus Siddiqi 1972

Authors/Creators

Description

Helicotylenchus talonus Siddiqi, 1972

(Fig. 1, I–J and Image 5 A–B)

Material examined: 3 females, 31.xii.2009; coll. P. Bohra, Reg.No. IV/2344.

Measurements: Females: L = 0.41–0.46 mm; a = 22–24; b = 5.8–6.5; c = 1.1–1.2; c´ = 0.8–0.9; V = 62–66.

Description: Female: Body spirally curved upon fixation. Lateral fields marked by four incisures. Lip region hemispheroid, distinctly marked by 4–5 labial annules. Stylet 19–20µm long; basal knobs large with flattened to concave anterior surface–median oesophageal bulb oval. Ovaries paired. Tail dorsally convex–conoid, with 3–7 annules ventrally and a large, bluntly rounded, claw–like unstriated ventral projection.

Habitat and locality: Collected from soil around roots of Lemon (Citrus reticulate) at Kakarwa, Rajasamand District, Rajasthan, India.

Remarks: H. talonus Siddiqi, 1972 comes close to H. glissus Thorne & Malek, 1968; H. bradys Thorne & Malek, 1968 and H. borinquensis Roman, 1965. From H. glissus it differs in having a distinctly annulated lip region, a wider tail projection and inner incisures of the lateral fields usually fusing distally on tail. From H. bradys it can be differentiated by spear length (spear 29–33 µ long in H. bradys), finer body annules (3µ wide at mid– body in H. bradys) and fewer tail annules. From H. borinquensis it can be separated by its fewer tail annules, a large tail projection and phasmids which are closer to the anal level.

Notes

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

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Linked records

Additional details

Biodiversity

Scientific name authorship
Siddiqi
Kingdom
Animalia
Phylum
Nematoda
Order
Tylenchida
Family
Hoplolaimidae
Genus
Helicotylenchus
Species
talonus
Taxon rank
species
Taxonomic concept label
Helicotylenchus talonus Siddiqi, 1972 sec. Bohra, 2012

References

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