The genus Daiconotrechus Ueno, 1971 is endemic genus of Japan with two subgenera, Daiconotrechus Ueno, 1971 and Tsuiblemus Ueno, 2007. Adults of all species in this genus are eyeless with depigmented and elongated body. These morphological features are typical characters of adaptation to subterranean environments. Distribution of all species of the subgenus Tsuiblemus is restricts to Tsushima Island, Japan. In this study, we report the genus Daiconotrechus for the first time in Korea, with a new species in the subgenus Tsuiblemus. Illustrations of morphological characters and habitus are also provided.

Beetles are one of the most effective transportation for phoretic chelicerata. They use various methods to attach themselves to their hosts, such as developing ventral sucker plates, grasping with their claws and chelicerae, or hiding beneath the elytra. Recently, we discovered new species of two genera: Antennoseius (Mesostigmata: Blattisociidae) and Gaeolaelaps (Mesostigmata: Laelapidae) which are hiding under the elytra of Carabidae hosts. In this study, digital images of the beetles, and mites, along with brief diagnostic information and line-drawing plates will be provided.