Two new species of the genus Cephalenchus (Goodey, 1962) Golden, 1971 with a key to species

Abstract

Two new species of Cephalenchus (Goodey, 1962) Golden, 1971 from Almora and Nainital districts of Uttar Pradesh, India are described and figured. C. cylindricus sp. n. is characterized in having a body 0.62-0.75 mm long, broadly hemispherical head with well sclerotized cephalic framework and ring, 20-21 μ m long spear, oesophagus measuring 98-108 μ m with cylindrical basal bulb, anteriorly located vulva, a long tail measuring 190-225 μ m and in the absence of males. This new species is close to C. leplus (Siddiqi, 1963) Golden, 1971 and C. emarginatus (Cobb, 1893) Golden, 1971. C. cephalodiscus sp. n. is characterized in having a body 0.62-0.69 mm long, broadly hemispherical head with 2-3 annules, 20-21 μ m long spear, prominent cardia, anteriorly located vulva, spermatheca with sperms and a shorter tail. The male is characterized in having a shorter body measuring 0.59 mm, 15 p.m long spicules and 28 μ m long bursa. This new species is close to C. leptus (Siddiqi, 1963) Golden, 1971 and C. lobus Dhanachand and Jairajpuri, 1980. A key to the species of the genus is given.