Bivalvia | ... | Unionoidea | Unionidae | Unioninae | Unionini | Oxynaiina | Nodularia
50 specimens + 19 GenBank vouchers

Martens, 1877. S.-Ber. Ges. Naturf. Freunde zu Berlin 1877: 119.
Martens, 1905. Zool. Jb., Jena, Suppl. 8: 58.
Type(s): SYNTYPES ZMB_28142, Mukosima, Tokio, Japan.
Nodularia (s.s.) douglasiae var. nipponensis — Simpson (1900), Simpson (1914)
Unio (Nodularia) nipponensis — Martens (1905)
Nodularia (s.s.) douglasiae nipponensis — Haas (1911)
Lymnium douglasiae nipponensis — Kira (1954)
Unio douglasiae nipponensis — Kira (1959), Haas (1969), Kondo (1997), Kondo (2008)
Unio douglasisae nipponensis — Kuroda (1963)
Unio douglasiae — Habe (1977), Habe (1991)
Nodularidia douglasiae — He & Zhuang (2013)
Nodularia douglasiae nipponensis — Sano et al. (2017), Kano et al. (2019)
Nodularia nipponensis — Liu et al. (2017), Klishko et al. (2018), Lopes-Lima et al. (2020), Choi et al. (2020), Sayenko et al. (2021), ... Hou et al. (2025), Hou et al. (2025), Chen et al. (2025), Hou et al. (2025), Campbell & Lydeard (2026)
‘Kobelt’ of Authors.
Sano et al., 2017. J. Wat. Res. Prot. 9: Table 2.
(misidentified reference to Unio biwae Kobelt, 1879)
‘Griffith & Pidgeon’ of Authors.
Fukata & Iigo, 2019. mtDNA B 4(2): 3488. [in part]
Sano et al., 2020. Plankton Benthos Res. 15(2): Table 1. [in part]
Choi et al., 2020. Sci. Repts. 10: 6, fig. 3A [as ‘Clade B’]. [in part]
Kim et al., 2021. mtDNA B 6(1): 80. [in part]
Pavan-Kumar et al., 2022. Mol. Biol. Rep. 49: Table S1.
Dai et al., 2024. Invert. Syst. 38(6): Table S1. [in part]
(misidentified reference to Unio douglasiae Griffith & Pidgeon, 1833)
Nodularia douglasiae — Wu et al. (2024)
Nodularia (s.s.) douglasiae var. nipponensis — Simpson (1900), Simpson (1914)
Unio (Nodularia) nipponensis — Martens (1905)
Nodularia (s.s.) douglasiae nipponensis — Haas (1911)
Lymnium douglasiae nipponensis — Kira (1954)
Unio douglasiae nipponensis — Kira (1959), Haas (1969), Kondo (1997), Kondo (2008)
Unio douglasisae nipponensis — Kuroda (1963)
Unio douglasiae — Habe (1977), Habe (1991)
Nodularidia douglasiae — He & Zhuang (2013)
Nodularia douglasiae biwae — Sano et al. (2017)
Nodularia douglasiae nipponensis — Sano et al. (2017), Kano et al. (2019)
Nodularia nipponensis — Liu et al. (2017), Klishko et al. (2018), Lopes-Lima et al. (2020), Choi et al. (2020), Sayenko et al. (2021), ... Hou et al. (2025), Hou et al. (2025), Chen et al. (2025), Hou et al. (2025), Campbell & Lydeard (2026)
Nodularia douglasiae — Fukata & Iigo (2019), Sano et al. (2020), Kim et al. (2021), Pavan-Kumar et al. (2022), Wu et al. (2024), Dai et al. (2024)
Nodularia douglasiae Clade B — Choi et al. (2020)