brachycephalus, Diaphus Tåning [A. V.] 1928:59 [Videnskabelige Meddelelser fra Dansk Naturhistorisk Forening, Kjøbenhavn v. 86; ref. 15877] Eastern Atlantic [ca. 300 kilometers north of São Nicolau Island, Cape Verde Islands], 19°22'N, 24°06'W, depth about 200 meters. Lectotype: ZMUC P2329197. Type catalog: Nielsen 1974:35 [ref. 9588]. Lectotype selected by Nafpaktitis 1973:34 [ref. 10436]. •Valid as Diaphus brachycephalus Tåning 1928 -- (Krefft & Bekker 1973:176 [ref. 7181], Paxton 1979:9 [ref. 6440], Hulley in Whitehead et al. 1984:443 [ref. 13675], Fujii in Masuda et al. 1984:72 [ref. 6441], Hulley 1986:290 [ref. 5672], Paxton et al. 1989:256 [ref. 12442], Hulley 1990:407 [ref. 15273], Santos et al. 1997:45 [ref. 23531], McEachran & Fechhelm 1998:631 [ref. 23897], Fricke 1999:96 [ref. 24106], Paxton & Hulley 1999:1962 [ref. 24748], Nakabo 2000:395 [ref. 25086], Paxton & Hulley in Randall & Lim 2000:593 [ref. 25122], Hutchins 2001:20 [ref. 25847], Chen 2002:195 [ref. 26587], Nakabo 2002:395 [ref. 26001], Santos et al. in Menezes et al. 2003:52 [ref. 27192], Hartel & Craddock 2003:950 [ref. 27005], Moore et al. 2003:199 [ref. 27076], Shinohara et al. 2005:411 [ref. 28370], Mundy 2005:214 [ref. 28379], Paxton et al. 2006:513 [ref. 28994], Costa & Mincarone 2010:354 [ref. 37483], Fricke et al. 2011:360 [ref. 31242], Pinheiro et al. 2015:8 [ref. 34324], Hulley 2016:1887 [ref. 34576], Fricke et al. 2018:76 [ref. 35805], Carneiro et al. 2019:116 [ref. 37250], Sutton et al. 2020:174 [ref. 37832] in subgenus Diaphus, Eduardo et al. 2021:4 [ref. 38817], Borsa et al. 2022:89 [ref. 40127], Eduardo et al. 2022:8 [ref. 39574], Fermon et al. 2022:189 [ref. 39448], Prokofiev et al. 2022:11 [ref. 38957], Page et al. 2023:94 [ref. 40505]). Current status: Valid as Diaphus brachycephalus Tåning 1928. Myctophidae: Diaphinae. Distribution: Circumglobal in tropical through temperate seas, but not in eastern Pacific. Habitat: marine.