Two new species within the genus Euochin Prószyński 2018, collected from the Nansei Islands, Japan, are described as Euochin japonica Suguro sp. nov. and E. yaeyamana Suguro sp. nov. The genus Euochin is newly recorded in Japan. The two new species can be distinguished from their congeners based on the morphology of the retromarginal tooth and the genitalia.
https://ror.org/046zepm61 
