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e-ased.org, vol. 35, no. 2, pp.41-48, 2019

DOI: https://doi.org/10.5635/ASED.2019.35.2.029

First Record of Two Pseudacrobeles Species (Nematoda: Rhabditida: Cephalobidae) in South Korea

Taeho Kim, Joong-Ki Park*

Affiliation: Division of EcoScience, Ewha Womans University, Seoul 03760, Korea

Abstract: Pseudacrobeles (Pseudacrobeles) variabilis (Steiner, 1936) Steiner, 1938 and P. (Bunobus) pseudolatus (Hernandez, 1990) De Ley, Siddiqi and Bostrom, 1993 belonging to the family Cephalobidae Filipjev, 1934 are newly reported from South Korea. Pseudacrobeles (Pseudacrobeles) variabilis is distinguished from its congeners by having distinctly setiform cephalic probolae, three rounded or knob-shaped labial probolae and longer female tail. Pseudacrobeles (Bunobus) pseudolatus is distinguished from its congeners by having visibly lateral lips, a short post-uterine sac, elongated conoid tail in the female, and acute mucro on the tails of both sexes. In this study, details of the morphological characters and morphometrics of Korean populations of P. (P.) variabilis and P. (B.) pseudolatus are described and illustrated based on optical microscopy.

Keyword: Cephalobidae, Pseudacrobeles, Bunobus, new record, South Korea