Ralumia balssi – synonym of Calmania balssi
Ralumia dahli – synonym of Calmania dahli
Ralumia simodaensis – synonym of Calmania simodaensis
Randallia coronata – synonym of Pariphiculus coronatus
Randallia coronatus – synonym of Pariphiculus coronatus
Randallia glans – synonym of Ebalia glans
Randallia japonica – synonym of Randallia eburnea
Randallia lanata – synonym of Ihleus lanatus
Ranilia horikoshii – synonym of Umalia horikoshii
Ranilia misakiensis – synonym of Umalia misakiensis
Ranilia orientalis – synonym of Umalia orientalis
Ranilia ovalis – synonym of Umalia ovalis
Ranina dentata – synonym of Ranina ranina
Ranina drosipes – synonym of Notopus dorsipes
Ranina scabra – synonym of Ranina ranina
Ranina serrata – synonym of Ranina ranina
Raninoides barnardi – synonym of Notosceles barnardi
Raninoides serratifrons – synonym of Notosceles serratifrons
Rhinolambrus contrarius – synonym of Parthenope contrarius
Rhinolambrus lamelligera – synonym of Parthenope contrarius
Rhynchoplax coralicola – synonym of Halicarcinus coralicola
Rhynchoplax hondai – synonym of Halicarcinus hondai
Rhynchoplax introversus – synonym of Elamenopsis introversa
Rhynchoplax messor – synonym of Halicarcinus messor
Rhynchoplax setirostris – synonym of Halicarcinus setirostris
Rhynchoplax sinensis – synonym of Elamenopsis sinensis
Rochinia bidens – synonym of Oxypleurodon bidens
Rochinia dodosus – synonym of Oxypleurodon nodosus
Rochinia nodosa – synonym of Oxypleurodon nodosus
Rochinia stimpsoni – synonym of Oxypleurodon stimpsoni
Rochinia velutina – synonym of Oxypleurodon velutinus
Ruppellia annulipes – synonym of Lydia annulipes
Ruppellia lata – synonym of Baptozius vinosus
Rüppellia vinosa – synonym of Baptozius vinosus