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Two new species of the genus Coomansinema Ahmad and Jairajpuri, 1989 (Nematoda: Dorylaimida) with a key to its species.

Ahmad, W. ; Mushtaq, P. ; Shahnaz ; Kumar, S.

Helminthologia 2019 Vol 56 No. 1 pp. 42-52;

Abstract

Two new species of the genus Coomansinema Ahmad and Jairajpuri, 1989 are described and illustrated. C. japonicum n. sp. is characterized by having medium size body (L=1.40-1.45 mm); lip region truncate with completely amalgamated lips; amphideal fovea goblet - shaped; 16-20 µm long odontostyle; 23-25 µm long odontophore; comparatively anterior position of the second pair of pharyngeal glands; amphidelphic female genital system; longitudinal vulva; males with 48-54 µm long spicules; 7-8 spaced ventromedian supplements and tail long filiform in female and short conoid in male. C. longicaudatum n. sp. is characterized by having medium size body (L=1.1-1.3 mm); lip region truncate, continuous with completely amalgamated lips; amphideal fovea cup - shaped; 16-17 µm long odontostyle; 19-20 µm long odontophore; comparatively anterior position of the second pair of pharyngeal glands; amphidelphic female genital system; transverse vulva, intestinal-prerectum junction with a tongue - like structure and 210-269 µm long filiform tail. A key to its seven valid species is provided.