In synonymy:
Paraphysa Simon, 1892 = Euathlus Ausserer, 1875 (Perafán & Pérez-Miles, 2014b: 2397)

type Euathlus truculentus L. Koch, 1875; gender masculine

N.B.: considered a senior synonym of Brachypelma Simon, 1891 by Raven, 1985a: 150; Schmidt, 1991b: 12 removed Brachypelma from synonymy; that resurrection was subsequently rejected by Smith, 1991b: 19, but was justified by Schmidt, 1992a: 10 and a senior synonym of Paraphysa Simon, 1892a: 166 [urn:lsid:nmbe.ch:spidergen:00262] (type P. manicata Simon, 1892) by Perafán & Pérez-Miles, 2014b: 2397 (in part, nec Paraphysa peruviana Schmidt, 2007, nec Paraphysa riparia Schmidt & Bolle, 2008); not a senior synonym of Phrixotrichus Simon, 1889 per Perafán & Pérez-Miles, 2014b: 2408, contra Schmidt, 1996a: 14 (contra Pérez-Miles et al., 1996: 54, who considered Phrixotrichus a senior synonym of Grammostola Simon, 1892) and not a senior synonym of Ashantia Strand, 1908 per Perafán & Pérez-Miles, 2014b: 2408, contra Gallon, 2005d: 199 (contra Raven, 1985a: 112).

Transferred to other genera:
Euathlus albopilosus (Valerio, 1980) -- see Tliltocatl
Euathlus angustus (Valerio, 1980) -- see Sericopelma
Euathlus chilensis (Molina, 1810) -- see Phrixotrichus
Euathlus emilia (White, 1856) -- see Brachypelma
Euathlus fossorius (Valerio, 1980) -- see Sandinista
Euathlus mesomelas (O. Pickard-Cambridge, 1892) -- see Abdomegaphobema
Euathlus pallidus (F. O. Pickard-Cambridge, 1897) -- see Aphonopelma
Euathlus peruvianus (Schmidt, 2007) -- see Thrixopelma
Euathlus pulcherrimaklaasi (Schmidt, 1991) -- see Cyclosternum
Euathlus roseus (Guérin, 1838) -- see Grammostola
Euathlus sabulosus (F. O. Pickard-Cambridge, 1897) -- see Tliltocatl
Euathlus scrofa (Molina, 1782) -- see Phrixotrichus
Euathlus smithi (F. O. Pickard-Cambridge, 1897) -- see Brachypelma
Euathlus vagans (Ausserer, 1875) -- see Tliltocatl
Euathlus vulpinus (Karsch, 1880) -- see Phrixotrichus
Euathlus vulpinus ater (Donoso, 1957) -- see Phrixotrichus

In synonymy:
Euathlus phryxotrichoides (Strand, 1907, T from Phrixotrichus) = Euathlus truculentus L. Koch, 1875 (Pérez-Miles et al., 1996: 48).

Mygale affinis Nicolet, 1849: 333, pl. 1, f. 6 (Df).
Brachypelma affinis Mello-Leitão, 1936d: 118.
Euathlus affinis Fukushima & Bertani, 2017: 122, f. 221, 225 (f, T from Avicularia).

Euathlus antai Perafán & Pérez-Miles, 2014b: 2401, f. 3A-C (Df).

Euathlus atacama Perafán & Pérez-Miles, 2014b: 2402, f. 4A-F (Dmf).

Euathlus condorito Perafán & Pérez-Miles, 2014b: 2404, f. 5A-F (Dmf).
Euathlus condorito Montenegro & Aguilera, 2024a: 333, f. 2a, 3a, 4a, 5a-b, 7a (mf).

Euathlus diamante Ferretti, 2015c: 316, f. 2a-e, 3a-e (Dmf).

Euathlus grismadoi Ríos-Tamayo, 2020: 85, f. 1a-j, 2a-d (Dmf).

Paraphysa manicata Simon, 1892a: 166 (Dm).
Paraphysa manicata F. O. Pickard-Cambridge, 1897a: 27, pl. 1, f. 18 (m).
Paraphysa manicata Strand, 1907f: 221 (Df).
Paraphysa manicata Schiapelli & Gerschman, 1963: 106, f. 2, 4, 6, 11-12 (m).
Paraphysa manicata Legendre & Calderón, 1984: 1024, pl. I, f. 1-15 (m, Df).
Paraphysa manicata Schmidt, 1993c: 8, unnumbered f. (f).
Paraphysa manicata Schmidt, 1993d: 92, f. 260-263 (mf).
Paraphysa manicata Pérez-Miles et al., 1996: 54, f. 33 (m).
Paraphysa scrofa Schmidt & Antonelli, 1999: 21, f. 1-7 (mf; misidentified per Perafán & Pérez-Miles, 2014b: 2406).
Paraphysa scrofa Peters, 2000b: 74, f. 207-209 (mf; misidentified per Perafán & Pérez-Miles, 2014b: 2406).
Paraphysa scrofa Schmidt, 2003l: 126, f. 105-107 (m; misidentified per Perafán & Pérez-Miles, 2014b: 2406).
Euathlus manicata Perafán & Pérez-Miles, 2014b: 2406, f. 6A-E (mf, T from Paraphysa, removed from S of Paraphysa scrofa rejecting Schmidt, 1996a: 17).
Euathlus manicatus Vargas & Aguilera, 2024: 583, f. 1A-E (f).
Euathlus manicata Montenegro & Aguilera, 2024a: 333, f. 2b, 3b, 6a-b, 7c (m).

Euathlus mauryi Ríos-Tamayo, 2020: 91, f. 3a-j, 4a-e (Dmf).

Euathlus pampa Ríos-Tamayo, 2020: 93, f. 5a-d (Df).

Phryxotrichus parvulus Pocock, 1903b: 107 (Dm).
Phrixotrichus parvulus Legendre & Calderón, 1984: 1035, pl. VII, f. 1-10 (m).
Phrixotrichus parvulus Schmidt, 1993d: 96, f. 281-283 (m).
Paraphysa parvula Schmidt, 1996a: 17 (T from Phrixotrichus).
Paraphysa parvula Schmidt, 2003l: 182, f. 461-463 (m).
Euathlus parvulus Perafán & Pérez-Miles, 2014b: 2406, f. 7A-D (m, Df, T from Paraphysa).

Euathlus sagei Ferretti, 2015c: 318, f. 4a-f, 5a-e, 6a-c (Dmf).

Euathlus tenebrarum Ferretti, 2015c: 320, f. 7a-e, 8a-e, 9a (Dmf).

Euathlus truculentus L. Koch, in Ausserer, 1875: 188, pl. 7, f. 35 (Dm).
Paraphysa phryxotrichoides Strand, 1907f: 225 (Dj) [urn:lsid:nmbe.ch:spidersp:056962].
Paraphysa manicata Schiapelli & Gerschman, 1963: 106, f. 8 (f; misidentified per Perafán & Pérez-Miles, 2014b: 2407).
Paraphysa phryxotrichoides Legendre & Calderón, 1984: 1027, pl. II, f. 1-13 (Dm, f).
Paraphysa phryxotrichoides Schmidt, 1991d: 9, f. 5-9 (mf).
Paraphysa pulcherrimaklaasi Schmidt, 1991d: 8, f. 2 (f; misidentified per Perafán & Pérez-Miles, 2014b: 2407).
Euathlus truculentus Schmidt, 1992a: 9, f. 1 (m).
Euathlus truculentus Schmidt, 1992c: 9, f. 1-5 (m).
Paraphysa phryxotrichoides Schmidt, 1993c: 8, unnumbered f. (f).
Paraphysa phryxotrichoides Schmidt, 1993d: 92, f. 264-267 (mf).
Paraphysa pulcherrimaklaasi Schmidt, 1993d: 92, f. 259 (f; misidentified per Perafán & Pérez-Miles, 2014b: 2408).
Phrixotrichus phryxotrichoides Schmidt, 1994k: 5 (T from Paraphysa = Euathlus).
Euathlus truculentus Smith, 1995: 184, f. 1022-1031 (m).
Euathlus truculentus Pérez-Miles et al., 1996: 48, f. 18-19 (mf, S of Phrixotrichus phryxotrichoides).
Euathlus truculentus Schmidt, 1997g: 17, f. 82, 84, 86 (mf).
Phrixotrichus pulcherrimaklaasi Schmidt, 1997g: 17, f. 85 (f; misidentified per Perafán & Pérez-Miles, 2014b: 2408).
Euathlus truculentus Vol, 1999a: 11, f. H (f).
Paraphysa manicata Vol, 1999a: 12, f. S (f; misidentified per Perafán & Pérez-Miles, 2014b: 2407).
Euathlus truculentus Schmidt, 1999f: 5, f. 20-23 (mf).
Euathlus truculentus Bertani, 2000: 30, f. 7-8 (m).
Euathlus truculentus Peters, 2003: 174, f. 689, 691-694 (mf).
Euathlus truculentus Schmidt, 2003l: 128, f. 119-122 (mf).
Euathlus pulcherrimaklaasi Schmidt, 2003l: 256, f. 8 (f; misidentified per Perafán & Pérez-Miles, 2014b: 2408).
Euathlus truculentus Peters, 2005b: 60, f. 187-193 (mf).
Euathlus truculentus Perafán & Pérez-Miles, 2014b: 2407, f. 8A-C (m).
Euathlus truculentus Montenegro & Aguilera, 2024a: 333, f. 2c, 3c, 4b, 6c-d, 7d (mf).

Euathlus vanessae Quispe-Colca & Ferretti, 2021: 2, f. 1-15 (Dmf).