nesion, Helcogramma Williams [J. T.] & Howe [J. C.] 2003:167, Fig. 15 [aqua, Journal of Ichthyology and Aquatic Biology v. 7 (no. 4); ref. 27249] Miyake-jima, Igaya Bay, Izu Islands, Japan, depth 5-10 meters. Holotype: USNM 329645. Paratypes: BPBM 35294 (8); USNM 222324 (6), 222329-32 (2, 2, 1, 2), 222346 (1). Plus nontype material. •Valid as Helcogramma nesion Williams & Howe 2003 -- (Holleman 2006:102 [ref. 28864], Motomura et al. 2006:106 [ref. 29490], Fricke 2009:50 [ref. 30394], Patzner et al. 2009:447 [ref. 30396], Fricke & Erdmann 2017:42 [ref. 35190], Murase et al. 2023:42 [ref. 40935]). Current status: Valid as Helcogramma nesion Williams & Howe 2003. Tripterygiidae: Tripterygiinae. Distribution: Northwestern Pacific: southern Japan and Ogasawara Islands (Japan). Habitat: marine.