ponapensis, Trygon Günther [A.] 1910:493, Pl. 180 [Journal des Museum Godeffroy v. 6 (no. 17); ref. 14460] Kabary, Ponape [Pohnpei], Caroline Islands, Federated States of Micronesia, western Pacific. Holotype (unique): BMNH 1879.5.22.105. •Synonym of Himantura granulata (Macleay 1883) -- (Last & Compagno 1999:1488 [ref. 24639], Compagno et al. 2005:72 [ref. 29145], Kottelat 2013:26 [ref. 32989]). •Synonym of Urogymnus granulatus (Macleay 1883) -- (Manjaji-Matsumoto et al. 2022:615 [ref. 39674]). Current status: Synonym of Urogymnus granulatus (Macleay 1883). Dasyatidae: Urogymninae. Habitat: brackish, marine.