Animal Systematics, Evolution and Diversity

The Korean Society of Systematic Zoology (한국동물분류학회)
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First Record of Eucephalobus iaculocaudatus(Nematoda, Rhabditida, Cephalobidae) from South Korea

  • Kim, Taeho (Animal Resources Division, National Institute of Biological Resources)
  • Received : 2021.08.02
  • Accepted : 2021.10.20
  • Published : 2021.10.31
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Abstract

The genus Eucephalobus Steiner, 1936, belonging to the family Cephalobidae Filipjev, 1934 (Cephalobomorpha), represents a group of bacterial feeding nematodes. Although this group is cosmopolitan and species-rich, only two species have been reported from South Korea. Eucephalobus iaculocaudatus Bostrom and Holovachov, 2011 was collected from natural forest in Chungcheongbuk-do, South Korea. This species shows typical morphological characters of the genus Eucephalobus, including a bicornuate labial probolae, cephalic probolae absent and three lateral incisures. However, E. iaculocaudatus is distinguished from other Eucephalobus species by conoid tail with a harpoon-shape mucro in female and ragged mucro in male. In this study, detailed morphological characters and morphometrics of E. iaculocaudatus are described and illustrated based on optical microscopy.

Keywords

Acknowledgement

This work was supported by a grant from the National Institute of Biological Resources (NIBR), funded by the Ministry of Environment(MOE) of the Republic of Korea (NIBR201902204).

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