Abstract
Two new linyphiid species, Arcuphantes shiozakii sp. nov. and A. yakiyama sp. nov., from Owase, eastern Kii Peninsula, Japan, are described based on both sexes. Given the fact that the two new species share almost identical mitochondrial cytochrome c oxidase subunit I sequences, they may represent closely related sister species, but nonetheless, they are clearly distinguishable from each other by the genital characters. Additionally, the new species are closely related to A. osugiensis (Oi 1960) and A. yamakawai (Oi 1960), but they are also distinguished by the morphology of genitalia.
https://ror.org/02kpeqv85 
