• Ampithoe (Pleonexes) Spence Bate, 1857 accepted as Pleonexes Spence Bate, 1857
• Ampithoe (Pleonexes) neglectus Lincoln, 1976 accepted as Ampithoe helleri Karaman, 1975 accepted as Pleonexes helleri (Karaman, 1975)
• Ampithoe (Pleonexes) poipu J.L. Barnard, 1970 accepted as Pleonexes poipu (J. L. Barnard, 1970)
• Ampithoe (Pleonexes) pomboi Mateus & Alfonso, 1974 accepted as Ampithoe pomboi (Mateus & Alfonso, 1974)
• Pleonexes Spence Bate, 1857
• Pleonexes aptos J.L. Barnard, 1969 accepted as Ampithoe aptos (J.L. Barnard, 1969)
• Pleonexes auriculata (Rabindranath, 1972)
• Pleonexes divisura (Shoemaker, 1933)
• Pleonexes ferox Chevreux, 1902 accepted as Ampithoe ferox (Chevreux, 1902)
• Pleonexes gammaroides Spence Bate, 1857
• Pleonexes helleri (Karaman, 1975)
• Pleonexes kaneohe (J.L. Barnard, 1970)
• Pleonexes kaneohe kaneohe (J.L. Barnard, 1970) represented as Pleonexes kaneohe (J.L. Barnard, 1970)
• Pleonexes kaneohe navosa Myers, 1985 accepted as Pleonexes navosa Myers, 1985
• Pleonexes kava (Myers, 1985)
• Pleonexes koreana (Kim & Kim, 1988) accepted as Ampithoe koreana Kim & Kim, 1988
• Pleonexes kulafi (J.L. Barnard, 1970)
• Pleonexes lessoniae Hurley, 1954 accepted as Pseudopleonexes lessoniae (Hurley, 1954)
• Pleonexes lowryi Souza-Filho & Andrade, 2022
• Pleonexes macrocornutus Kensley, 1971 accepted as Ampithoe macrocornuta (Kensley, 1971)
• Pleonexes maxillissius (Ledoyer, 1984)
• Pleonexes meganae (Peart, 2007)
• Pleonexes nargessi Momtazi & Maghsoudlou, 2020
• Pleonexes navosa Myers, 1985
• Pleonexes parakava (Peart, 2007)
• Pleonexes poipu (J. L. Barnard, 1970)
• Pleonexes qeshmensis (Layeghi & Momtazi, 2018)
• Pleonexes rotunda (Peart, 2007)
• Pleonexes suapensis (Correia, Guedes-Silva & Souza-Filho, 2016)