alcedo, Stiphodon Maeda [K.], Mukai [T.] & Tachihara [K.] 2012:287, Figs. 5, 6, 8 [Cybium v. 35 (no. 4) (for 2011); ref. 31973] Okinawa Island, Ryukyu Islands, Japan. Holotype: NSMT-P 103600. Paratypes: many at BLIH, NSMT, URM. •Valid as Stiphodon alcedo Maeda, Mukai & Tachihara 2012 -- (Maeda & Saeki 2013:215 [ref. 33022], Maeda 2013:(7) [ref. 33023], Maeda & Palla 2015:393 [ref. 33960], Maeda et al. 2015:255 [ref. 33999], Keith et al. 2015:174 [ref. 34328], Parenti 2021:425 [ref. 38603]). Current status: Valid as Stiphodon alcedo Maeda, Mukai & Tachihara 2012. Oxudercidae: Sicydiinae. Distribution: Western Pacific: Taiwan and Ryukyu Islands (Japan) [amphidromous]. Habitat: freshwater, brackish, marine.