Abylopsis tetragona (Otto, 1823)

Distribution in South America: Pacific Ocean, Colombia, from 7°N to 1°N (Alvariño 1976; Cely & Chiquillo 1993), Peru, from 4°S to 8°S (Bigelow 1911; IMARPE, database), Chile, from 23ºS to 55ºS and adjacent waters of Juan Fernández archipelago (Palma 1973, 1977, 1985, 1994; Palma & Rosales 1995, 1997; Palma et al. 1999, 2011; Ulloa et al. 2000; Pagès et al. 2001; Palma & Apablaza 2004; Apablaza & Palma 2006; Palma & Silva 2006); Atlantic Ocean, Colombia, from 17°N to 10ºN, at San Andrés, Providencia Island, Cartagena Bay and Gaira Inlet (Alvariño 1968, 1971; Moncaleano & Niño 1976; Giraldo & Villalobos 1983; Domínguez 2002), Venezuela, at 10ºN, in Gulf of Cariaco (Legarè 1961), off French Guiana (Leloup 1934; Leloup & Hentschel 1935); Brazil to Argentina, from 0º to 48ºS (Chun 1897; Moser 1925; Leloup 1932, 1934, 1937; Leloup & Hentschel 1935; Seguin 1965; Alvariño 1968, 1971, 1981; Abreu & Nogueira 1989; Cordeiro & Montú 1991; Nogueira & Oliveira 1991; Dias 1994; Pugh 1999; Migotto et al. 2002; Araujo 2006, 2012; Araujo et al. 2010; Silveira & Morandini 2011; Nogueira Jr. 2012; Bonecker et al. 2014; Nogueira Jr. et al., 2015b).

Habitat: neritic and oceanic species, epi- and mesopelagic, found in tropical, subtropical and temperate waters (Alvariño 1971, 1981; Pagès & Gili 1992; Pugh & Gasca 2009; Araujo 2012; Bonecker et al. 2014).