Two new species of the genus Cephalenchus (Goodey, 1962) Golden, 1971 with a key to species*
M. Sarwat Sultan, M. Shamim Jairajpuri
Abstract
M. Sarwat Sultan, M. Shamim Jairajpuri
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 μm long spear, oesophagus measuring 98–108 μm with cylindrical basal bulb, anteriorly located vulva, a long tail measuring 190–225 μm 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 μm 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 μm 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.
OpenAlex reports 3 citations for this work. Citation counts describe recorded attention and do not establish research quality.
A contribution statement is not available in the OpenAlex record.
Method details are not available in the OpenAlex metadata.
Findings are not separately available in the OpenAlex metadata.
Limitations are not available in the OpenAlex metadata.
Application details are not available in the OpenAlex metadata.
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 μm long spear, oesophagus measuring 98–108 μm with cylindrical basal bulb, anteriorly located vulva, a long tail measuring 190–225 μm 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 μm 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 μm 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.
Key concepts: Spermatheca, Biology, Genus, Anatomy, Sponge spicule, Key (lock), Zoology, Botany