Abstract
The spider genus Rhythela was taxonomically revised. Male palpal structure is employed for morphological examination because the structure of female receptacle is an unreliable taxonomic character due to its large variation. Four of seven known species, R. nishihirai, R. iheyana, R. sasakii, and R. ishigakiensis were remained as independent species. Ryuthela secundaria and R. owadai were newly synonymized with R. sasakii, and R. tanikawai was synonymized with R. ishigakiensis. The male of R. iheyana was described for the first time.
