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Issue: Vol. 5468 No. 1: 11 Jun. 2024
Type: Article
Published: 2024-06-11
DOI: 10.11646/zootaxa.5468.1.6
Page range: 154-166
Abstract views: 3
PDF downloaded: 0

Description of two new species of Haliplectus Cobb, 1913 (Nematoda, Plectida, Haliplectidae) from mangrove areas of Sandspit backwater, Karachi, Pakistan

Department of Zoology; University of Karachi; Karachi-75270; Pakistan
Ghent University; Department of Biology; Belgium
National Nematological Research Centre; University of Karachi; Karachi-75270; Pakistan
Department of Zoology; University of Karachi; Karachi-75270; Pakistan
National Nematological Research Centre; University of Karachi; Karachi-75270; Pakistan
Nematoda H. shahinae n. sp. H. sandspitensis n. sp. marine nematodes morphology morphometrics

Abstract

Haliplectus shahinae n. sp. and H. sandspitensis n. sp. two free-living marine nematodes of the family Haliplectidae Chitwood, 1951 collected from mangrove areas of Sandspit backwater, Karachi, Pakistan, are being described and illustrated. Both new species belong to a group of species characterized by the presence of a bipartite basal esophageal bulb with striated or unstriated valve plates. H. shahinae n. sp. is characterized by its comparatively shorter body length (0.4–0.44 mm); annulated cuticle; amphidial fovea at 6–9 µm from the anterior end; bipartite basal bulb with unstriated valve plates; reproductive system mono-prodelphic with reflexed ovary, presence of post uterine sac and vulva at 52–57% of body length and tail short conoid, straight, 1.5–1.8 times anal body width long. H. sandspitensis n. sp. is characterized by more than 1 mm body length (1.0–1.2 mm); annulated cuticle; amphidial fovea at 8–12 µm from the anterior end; bipartite basal bulb with striated valve plates; didelphic reproductive system, with the vulva at 40–47% of body length and tail elongated, conoid, 1.4–2.2 times anal body width long. A dichotomous identification key is provided for the valid species of Haliplectus Cobb, 1913.

 

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