Amphicaryon acaule Chun, 1888

Distribution in South America: Pacific Ocean, Chile, from 23ºS to 37°S off Antofagasta to off Concepción (Palma 1973, 1977, 1994; Palma & Rosales 1995; Pagès et al. 2001; Palma & Apablaza 2004; Apablaza & Palma 2006; Pavez et al. 2010); Atlantic Ocean, Brazil to Argentina, from 0º to 37ºS (Alvariño 1968, 1971; Dias 1994; Pugh 1999; Migotto et al. 2002, Araujo et al. 2010; Silveira & Morandini 2011; Araujo 2012; specimens collected in this study).

Habitat: neritic and oceanic species, widely distributed in tropical and subtropical waters (Alvariño 1981; Pugh & Gasca 2009; Araujo 2012).