New observations on Thornedia opisthodelphis (Jairajpuri, 1968) Siddiqi, 1982 (Dorylaimida, Leptonchidae) from Vietnam, with discussion on the identity of the genus

Authors

  • D. NGUYEN
  • T. T. VU
  • W. AHMAD
  • R. PEÑA-SANTIAGO

Keywords:

Description, dorylaims, Leptonchidae, morphology, Nordiidae, taxonomy, Thornedia, Vietnam

Abstract

Thornedia opisthodelphis

from a natural forest in northern Vietnam is described and illustrated. It is characterized by its body 0.50-0.57 mm long, lip region almost continuous and 5 μm broad, odontostyle attenuate and 21 μm long or 4.2 times the lip region width, odontophore linear, neck 148-155 μm long, pharyngeal expansion 38-45 μm long or 25-29% of total neck length, female genital system mono-opisthodelphic, prevulval sac totally absent, pars refringens vaginae also absent, V = 45-51, tail cylindrical (18-24 μm, c = 23.5-31.7, c = 1.5-2.2), and male unknown. The identity of Thornedia is discussed in depth, including a historical outline, morphological characterization and its taxonomy. Because of the tylencholaimid cuticle and short pharyngeal expansion, it is transferred from Nordiidae to Leptonchidae. An emended diagnosis as well as a compendium of their species are also provided.

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Author Biographies

D. NGUYEN

Institute of Ecology and Biological Resources, Vietnam Academy of Sciences and Technology. 18 Hoang Quoc Viet, Cau Giay, Ha Noi, Vietnam

T. T. VU

Institute of Ecology and Biological Resources, Vietnam Academy of Sciences and Technology. 18 Hoang Quoc Viet, Cau Giay, Ha Noi, Vietnam

Departamento de Biología Animal, Biología Vegetal y Ecología, Universidad de Jaén. Campus "Las Lagunillas" s/n, 23071-Jaén, Spain

W. AHMAD

Section of Nematology, Department of Zoology, Aligarh Muslim University. Aligarh, India

R. PEÑA-SANTIAGO

Departamento de Biología Animal, Biología Vegetal y Ecología, Universidad de Jaén. Campus "Las Lagunillas" s/n, 23071-Jaén, Spain

Published

2012-11-07

How to Cite

NGUYEN, D., VU, T. T., AHMAD, W., & PEÑA-SANTIAGO, R. (2012). New observations on Thornedia opisthodelphis (Jairajpuri, 1968) Siddiqi, 1982 (Dorylaimida, Leptonchidae) from Vietnam, with discussion on the identity of the genus. Journal of Nematode Morphology and Systematics, 14(1), J. Nematode Morphol. Syst., 14 (1): 63–69 (2011). Retrieved from https://revistaselectronicas.ujaen.es/index.php/jnms/article/view/801