Five New Species of Mononchs From Malnad Tracts of Karnataka, India

Five new species of mononchs, two of Cobbonchus, two of Iotonchus and one Parahadronchus, are described and illustrated. Cobbonchus inclinatus sp. n. is distinct in the presence of inclined vulva and absence of vulval papillae. C. papillatus sp. n. has 3-4 pre- and post-vulval papillae; males with 41-52 μm long spicules and 7 ventromedian supplements. Iotonchus apapillatus sp. n. is a large nematode with amphidelphic gonads, highly muscular and atypical vagina, terminal spinneret; males with massive spicules and 17-19 ventromedian supplements. I. southi sp. n. has mono-prodelphic gonads, advulval papillae, subterminal spinneret; males with medium-sized spicules and 12 ventromedian supplements. Parahadronchus magnus sp. n. is distinct in having a larger body of about 4-5 mm, barrel-shaped buccal cavity, atypical vagina; amphidelphic gonads; males with massive spicules and 15-16 ventromedian supplements.