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e-ased.org, vol. 37, no. 3, pp.242-248, 2021

DOI: https://doi.org/10.5635/ASED.2021.37.3.016

Lobohalacarus weberi (Acari, Halacaridae) from Shallow Ground Waters in South Korea

Jong Hak Shin1, Jimin Lee2, Cheon Young Chang1,*

Affiliation: 1Department of Biological Science, Daegu University, Gyeongsan 38453, Korea 2Marine Ecosystem Research Center, Korea Institute of Ocean Science & Technology, Busan 49111, Korea

Abstract: Lobohalacarus weberi (Romijn and Viets, 1924) is added to the halacarid fauna of Korea as the third member of freshwater halacarid species. Both the genus and species are newly recorded from Korea. Halacarid mites were collected from two hillside wells and a streamside hyporheic zone in the southeastern region of South Korea. Lobohalacarus weberi is characterized by a well­developed frontal spine­like process, seven dorsal setae, the fourth segment of palp with a short distal and three long proximal setae, and tibiae of legs II to IV with two, one, two pectinate setae, respectively. A few minor individual variabilities were observed in the number of perigenital seta and genital acetabula, the setal armature on genua of legs, and the shape of spinule row on lateral claws.

Keyword: description, freshwater, halacarid mite, hyporheic zone, new record, wells