acrocephalus, Arius Weber [M.] 1913:543, Figs. 20-21 [Süsswasserfische aus Niederländisch Süd- und Nord-Neu-Guinea v. 9 (livr. 4); ref. 4603] Bibis River, Regen Island, Alkmaar and Lorentz rivers, Irian Jaya, Indonesia. Syntypes: AMNH 9514 [ex ZMA 111090] (1); ZMA 111087-90 (1, 2, 1, 1). Type catalog: Nijssen et al. 1982:37 [ref. 19236], Ferraris 2007:47 [ref. 29155]. •Valid as Arius acrocephalus Weber 1913 -- (Roberts 1978:32 [ref. 8886], Burgess 1989:168 [ref. 12860]). •Synonym of Arius latirostris Macleay 1883 -- (Allen 1991:53 [ref. 21090]). •Synonym of Ariopsis latirostris (Macleay 1883) -- (Kailola 2004:126 [ref. 28108]). •Synonym of Neoarius latirostris (Macleay 1883) -- (Ferraris 2007:47 [ref. 29155], Larson et al. 2013:39 [ref. 32988]). •Synonym of Potamosilurus latirostris (Macleay 1883) -- (Marceniuk & Menezes 2007:101 [ref. 29031]). •Synonym of Papuarius latirostris (Macleay 1883). Current status: Synonym of Papuarius latirostris (Macleay 1883). Ariidae: Ariinae. Habitat: freshwater.