| japan | | riukiaria chelifera | species | 2 | 0 |
| japan | | riukiaria cornuta | species | 4 | 0 |
| japan | | riukiaria falcifera | species | 4 | 0 |
| japan | | riukiaria holstii | species | 4 | 0 |
| japan | | riukiaria mundyi | species | 2 | 0 |
| japan | ehime prefecture | riukiaria semicircularis semicircularis | subspecies | 1 | 0 |
| japan | fukui prefecture | riukiaria semicircularis | species | 2 | 0 |
| japan | hyogo prefecture | riukiaria semicircularis semicircularis | subspecies | 1 | 0 |
| japan | kagoshima prefecture | riukiaria scutata | species | 2 | 0 |
| japan | kumamoto prefecture | riukiaria cornuta | species | 2 | 0 |
| japan | kumamoto prefecture | riukiaria semicircularis | species | 5 | 0 |
| japan | kumamoto prefecture | riukiaria semicircularis semicircularis | subspecies | 2 | 0 |
| japan | kumamoto prefecture | riukiaria sp. tt2012_1 | species | 1 | 0 |
| japan | okinawa prefecture | riukiaria chelifera | species | 17 | 0 |
| japan | okinawa prefecture | riukiaria falcifera | species | 2 | 0 |
| japan | okinawa prefecture | riukiaria holstii | species | 2 | 0 |
| japan | okinawa prefecture | riukiaria mundyi | species | 1 | 0 |
| japan | okinawa prefecture | riukiaria sp. r001 | species | 3 | 0 |
| vietnam | | riukiaria sp. 1 adn-2013 | species | 1 | 0 |