In synonymy:
Paoningia Schenkel, 1936 = Phycosoma O. Pickard-Cambridge, 1880 (Liu et al., 2025b: 325)
Trigonobothrys Simon, 1889 = Phycosoma O. Pickard-Cambridge, 1880 (Fitzgerald & Sirvid, 2003: 28, with erroneous priority, contra Levi & Levi, 1962: 26)
Transferred to other genera:
Phycosoma stigmosum Yin, 2012 -- see Lasaeola
In synonymy:
Phycosoma amamiense (Yoshida, 1985) = Phycosoma japonicum (Yoshida, 1985) (Hu et al., 2026b: 296)
Phycosoma boesenbergi (Strand, 1902, T from Lasaeola) = Phycosoma inornatum (O. Pickard-Cambridge, 1861) (Wiehle, 1937: 187, sub Dipoena)
Phycosoma coreanum (Paik, 1995) = Phycosoma martinae (Roberts, 1983) (Yoshida & Ono, 2000: 132, sub Dipoena)
Phycosoma decamaculatum (Chen, Peng & Zhao, 1992) = Phycosoma martinae (Roberts, 1983) (Zhu, 1998: 236, sub Dipoena)
Phycosoma dissimile (O. Pickard-Cambridge, 1906, T from Lasaeola) = Phycosoma inornatum (O. Pickard-Cambridge, 1861) (Simon, 1914: 302, sub Dipoena)
Phycosoma furtivum (Chickering, 1951) = Phycosoma altum (Keyserling, 1886) (Levi, 1963a: 159, sub Dipoena)
Phycosoma hubeiense (Chen & Zhao, 1996) = Phycosoma sinicum (Zhu, 1992) (Zhu, 1998: 238, sub Dipoena)
Phycosoma immaculatum (Zhu, 1998, T from Dipoena) = Phycosoma flavomarginatum (Bösenberg & Strand, 1906) (Yoshida, 2002a: 14, sub Trigonobothrys)
Phycosoma kayaense (Paik, 1996) = Phycosoma japonicum (Yoshida, 1985) (Yoshida & Ono, 2000: 128, sub Dipoena)
Phycosoma luteum (Keyserling, 1891, T from Euryopis) = Phycosoma altum (Keyserling, 1886) (Levi, 1963a: 159, sub Dipoena)
Phycosoma pallidum (Chickering, 1943) = Phycosoma altum (Keyserling, 1886) (Levi, 1963a: 159, sub Dipoena)
Phycosoma ruedai (Barrion & Litsinger, 1995) = Phycosoma martinae (Roberts, 1983) (Yoshida & Ono, 2000: 132, sub Dipoena)