Abstract
Caenorhabditis chinkari sp. n. is described and illustrated. The species is characterized by the body size (1.07–1.40 μm ♀; 0.76–1.01 μm ♂) and the presence of anteriorly closed ellipsoidal bursa whose posterior end is blunt or rounded, with smooth edge throughout, papillae pattern 2 + 1 + 3 + 3 in males. Distal tips of caudal papillae 1, 2 and 3 attached to the dorsal surface of bursa, 4 and 9 to ventral surface and 5, 6, 7, and 8 to edge. It was collected from the faecal samples of Chinkara (Gazella gazella bennettii Sykes, 1831), captivated at the Alipore Zoological Garden, Kolkata, India. The collected samples were maintained in a culture plate in the laboratory and certain aspects of its biology and the ecology have been noted. Besides, C. avicola, C. bovis, C. clavopapillata and C. genitalis, this paper highlights the occurrence of another new species of the genus Caenorhabditis (Osche, Abteilung Systematik 81: 190–280, 1952; Dougherty, The genera of the subfamily Rhabditinae Micoletzky, 1922 (Nematoda): 69–76, 1953) in association with a vertebrate host.
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