Scaptognathus magnus (Acari: Halacaridae), a New Record from Korea

  • Lee, Jimin (Marine Ecosystem Research Center, Korea Institute of Ocean Science & Technology) ;
  • Shin, Jong Hak (Department of Biological Science, Daegu University) ;
  • Chang, Cheon Young (Department of Biological Science, Daegu University)
  • Received : 2020.01.30
  • Accepted : 2020.04.09
  • Published : 2020.04.30


An arenicolous halacarid, Scaptognathus magnus Abé is first recorded from Korea, which was collected from littoral coarse sandy bottom around Simnibawi Rock off Gangreung in the east coast of South Korea. The remarkable characteristics of this species are large body with idiosoma more than 470 ㎛ long, nearly trapezoidal anterior dorsal plate, and a unique chaetotaxy of bipectinate setae 5-3-3-3 on tibiae I-IV. The characteristics of Korean specimens coincide well with the original description from Hokkaido, Japan, except for the number of parambulacral setae on tarsus III and the weak median claws. Detailed illustrations and scanning electron microscope photographs based on Korean specimens are provided.


Supported by : Korea Institute of Marine Science and Technology Promotion (KIMST), Korea Institute of Ocean Science & Technology (KIOST), National Research Foundation of Korea (NRF)


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