Nematodes from Rajasthan, India. 1. Six new species of Dorylaimida

Abstract Six new species of the order Dorylaimida are described from Rajasthan, India: Mesodorylaimus kauli sp. n., 1.00-1.14 mm long, odontostyle 11-13 μm, female tail convex-conoid with elongated dorsally bent tip, male with 40-42 μm long spicules and ten to 11 regularly spaced ventromedian supplements; Mesodorylaimus bhansalii sp. n., 1.07-1.33 mm long, odontostyle 11-14 μm, female tail 5.3-5.4 anal body diam. long, male with 35-37 μm long spicules and 14-15 contiguous ventromedian supplements; Kochinema farodai sp. n., 0.96-1.18 mm long, well set off lip region, amphidial apertures prominent, odontostyle 17-19 μm, guiding ring one lip region diam. (LRD) from anterior end, tail 28-32 μm long, convex-conoid with rounded terminus; Kochinema caudatum sp. n., 0.81-0.95 mm long, well set off lip region, odontostyle 35-38 μm, odontophore 36-38 μm, guiding ring 2.1 LRD from anterior end and convex conoid tail with rounded tip; Tylencholaimus nagauriensis sp. n., 0.64-0.74 mm long, characterised by having perioral region disc-like, odontostyle 8-9 μm, monoprodelphic female reproductive system and anteriorly directed vagina; Tylencholaimus annulatus sp. n., distinct from all the known species of the genus in having coarsely striated inner cuticle giving an appearance like the species of Tylenchida, characterised by L = 0.50-0.59 mm, odontostyle 10-12 μm, odontophore 13-15 μm, amphidelphic female reproductive system and convex-conoid tail with rounded tip.