adiergastos, Chaetodon Seale [A.] 1910:116, Pl. 1 (fig. 2) [The Philippine Journal of Science, Section D v. 5 (no. 2); ref. 14595] Bantayan Island, Philippines. Holotype: BSMP 5800 (apparently destroyed). Paratypes: BSMP 5791 (1, apparently destroyed). •Valid as Chaetodon adiergastos Seale 1910 -- (Burgess 1978:546 [ref. 700], Allen 1980:159 [ref. 22764], Ida in Masuda et al. 1984:184 [ref. 6441], Allen & Swainston 1988:96 [ref. 25477], Blum 1989:13 [ref. 37553], Larson & Williams 1997:362 [ref. 23967], Allen 1997:148 [ref. 23977], Chen et al. 1997:118 [ref. 26476] dated 1810, Kuiter 1997:216 [ref. 25488], Myers 1999:163 [ref. 23965], Pyle in Randall & Lim 2000:623 [ref. 25122], Nakabo 2000:895 [ref. 25182], Allen 2000:105 [ref. 25868], Hutchins 2001:264 [ref. 25841], Hutchins 2001:36 [ref. 25847], Pyle 2001:3234 [ref. 26117], Nakabo 2002:895 [ref. 26193], Allen & Adrim 2003:42 [ref. 26830], Smith et al. 2003:303 [ref. 27125], Adrim et al. 2004:122 [ref. 27715], Allen et al. 2006:1288 [ref. 29090], Hobbs et al. 2007:108 [ref. 29249], Hobbs et al. 2008:8 [ref. 39350], Zuo & Tang 2011:1004 [ref. 32151], Allen & Erdmann 2012:518 [ref. 31980], Larson et al. 2013:154 [ref. 32988], Nakae in Kimura et al. 2018:207 [ref. 36460], Koeda in Motomura et al. 2021:38 [ref. 38121], Higuchi & Yagishita 2022:41 [ref. 39154], Allen & Erdmann 2024:551 [ref. 40796]). Current status: Valid as Chaetodon adiergastos Seale 1910. Chaetodontidae: Chaetodontinae. Distribution: Eastern Indian Ocean, western Pacific: Christmas Island (Australia), Malaysia and Indonesia east to Philippines and Palau, north to Ryukyu Islands (Japan) and Nagasaki (Japan), south to Western Australia. IUCN (2010): Least Concern. Habitat: marine.