Abstract
Specimens of Drilocephalobus moldavicus are described from the Kelso Dunes area, Mojave National Preserve, southern California. This is the first record of the genus in North America. The specimens of this population are characterized by a body length of 322–417 µm in females and 403 µm in the male; cuticle finely annulated; lateral field with five incisures, extending to phasmid and two incisures extending almost to tail terminus in both sexes; lip region helmet-shaped, offset from body contour; lips amalgamated; stoma with thin walls lacking sclerotizations; pharynx without distinct divisions, cylindrical, widening slightly at about 1/3 of its length and basally, without valves; spermatheca 14–19 µm long; postvulval uterine sac 25–27 µm long; spicules 23 µm long; and female tail conoid-elongate with rounded terminus.
References
Ali, S.M., Suryawanshi, M.V. & Chisty, K.Z. (1973) Two new species of Drilocephalobus Coomans & Goodey, 1965 (Nematoda: Drilocephalobidae) n. fam.) from Marathwada, India, with a revised classification of the superfamily Cephaloboidea (Paramonov, 1956) Paramonov, 1962. Nematologica, 19, 308–317.
Coomans, A. & Goodey, J.B. (1965) Drilocephalobus congoensis n. g., n. sp. Nematologica, 11, 116–120.
https://doi.org/10.1163/187529265X00546De Ley, I.T., De Ley, P., Baldwin, J.G., Mundo-Ocampo, M. & Nadler, S.A. (1999) Three new species of Nothacrobeles (Nemata: Cephalobidae) from the Mojave Desert, California. Journal of Nematology, 31, 482–497.
De Ley, P. & Coomans, A. (1990a) Terrestrial nematodes of the Galápagos archipelago. I: Three Rhabditida from Isla Fernandina. Bulletin de l’Institut Royal des Sciences Naturelles de Belgique, 60, 5–22.
De Ley, P. & Coomans, A. (1990b) Drilocephalobus moldavicus Lisetskaya, 1968 from Senegal: an odd nematode adds to its reputation under the scanning electron microscope (Nematoda: Rhabditida). Revue de Nématologie, 13, 37–43.
Heyns, J. (1962) Osstella hamata n. gen., n. sp., Zeldia serrata n. sp. and Acrobeles thornei n. sp., three new nematodes from South Africa (Rhabditida: Cephalobidae). Nematologica, 8, 301–306.
https://doi.org/10.1163/187529262X00107Holovachov, O., Tandingan De Ley, I., Mundo-Ocampo, M. & De Ley, P. (2009) Identification of Cephaloboidea (Nematoda). EUMAINE, Gent and Nematology, UC Riverside, 86 pp. Available from: http://www.nrm.se/download/18.9ff3752132fdaeccb6800015606/CEPHALOBOIDEA%5B1%5D.pdf (accessed 18 September 2018)
Lisetskaya, L.F. (1968) [A new species Drilocephalobus moldavicus n. sp. (Nematoda: Drilonematidae).] Parazity Zhivotnikh i Rastenij, 3, 94–95. [in Russian]
Siddiqi, M.R. (2001) Six new species of the genus Drilocephalobus (Nematoda: Cephaloboidea). International Journal of Nematology, 11, 260–269.
Zell, H. (1987) Nematoden eines Buchenwaldbodens. 9. Die Cephaloben (Nematoda: Rhabditida). Carolinea, 45, 121–134.