Newtoniopsis Salgado, 2005b: 199 [declared as masculine gender (sic)]. Type species: Nemadiopsis malleatus [sic] Szymczakowski (orig. des.).
Note: As “Genus 8 Newton, undescribed”, in Peck et al., 1998a: 59.
Key: to species in Salgado, 2011a: 256.
Distribution: Southern Chile, southwestern Argentina.
Biology: Carrion scavenger in forests near treeline.
N. harpagonis Salgado, 2011a: 252. Holotype male in FMNH. Type locality: 11 km W Angol, 1000 m, Malleco Province, Chile. Distribution: Chile: Cautín and Malleco Provinces.
N. malleata ( Szymczakowski, 1976: 433) ( Nemadiopsis); Salgado, 2005b: 202 comb. (as malleatus), 2006: 109 (as malleatus), 2011a: 255. Note: Spelling here corrected. Holotype male in MFBA. Type locality: Los Lagos, Río Negro Province, Argentina. Distribution: Argentina: Neuquén and Río Negro Provinces; Chile: Cautín, Chiloé, Malleco, Ñuble, Osorno, and Talca Provinces.
N. thayerae Salgado, 2005b: 203, 2006: 109, 2011a: 256. Holotype male in FMNH. Type locality: Parque Nacional Nahuelbuta, Coimallín area, 8.2 km NW Los Portones Entrance, 37º48.21’ S 73º00.89’ W, 1260 m, Malleco Province, Chile. Distribution: Chile: Maipo, Malleco, Ñuble, Quillota, and Talca Provinces.