New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India

Five new and thirteen known species of Dorylaimidae are described and illustrated. Prodorylaimium humaimae sp. nov has a 0.97–1.29 mm (female) and a 1.03–1.33 mm (male) long body; a truncate lip region; a transverse vulva; 30–35 μm long spicules, and 6–8 ventromedian supplements. Calcaridorylaimus indicus sp. nov has a 1.47–1.72 mm (female) and a 1.41–1.56 mm (male) long body; a slightly offset lip region; a longitudinal vulva; spicules 36–39 μm and 12–15 ventromedian supplements. Thornenema pseudodidelphis sp. nov has a 1.2–1.6 mm long body; a lip region with distinct labial and postlabial sclerotization; a pseudo-didelphic female genital system; a transverse vulva and a 8.5–14.1 × as long as anal body diameter long tail. Prothornenema cuticulare sp. nov has a 0.93 mm (female) and a 0.93–0.98 mm (male) long body; a cap-like lip region; a vulva transverse with a deep cuticle invagination anterior and posterior to it; spicules 31–32 μm and 17 ventromedian supplements. Prothornenema longicaudatum sp. nov has a 1.05–1.22 mm (female) and a 0.88–0.98 mm (male) long body; a lip region cap-like; a transverse vulva; spicules 30–32 μm long and 13–14 ventromedian supplements. The known species are Mesodorylaimus potus, M. guarani, M. chamoliensis, M. keralaensis, M. longicaudatus, Amphidorylaimus flagellicauday, Laimydorus siddiqii, Calodorylaimus andrassyi, Thornenema mauritianum, T. paraconurum, Opisthodorylaimus cavalcantii, Coomansinema oryzae, and Kunjudorylaimus kunjui.