In synonymy:
Erythrophorus C. L. Koch, 1850 = Eresus Walckenaer, 1805 (Simon, 1864: 299, sub Eresa (Erythrophora), downgraded to subgenus)

type Aranea cinnaberina Olivier, 1789; gender masculine; misidentified by Walckenaer, 1805 (= Eresus kollari Rossi, 1846)

N.B.: considered a senior synonym of Erythrophorus C. L. Koch, 1850: 70 [urn:lsid:nmbe.ch:spidergen:04793] (type Aranea cinnaberina Olivier, 1789) by Simon, 1864: 299, sub Eresa (Erythrophora), downgraded to subgenus.

Transferred to other genera:
Eresus algericus El-Hennawy, 2004 -- see Adonea
Eresus annulipes Lucas, 1857 -- see Loureedia
Eresus arenarius Kroneberg, 1875 -- see Stegodyphus
Eresus bicolor O. Pickard-Cambridge, 1869 -- see Stegodyphus
Eresus daliensis Yang & Hu, 2002 -- see Stegodyphus
Eresus depressus Tucker, 1920 -- see Gandanameno
Eresus echinatus Purcell, 1908 -- see Gandanameno
Eresus fumosus C. L. Koch, 1837 -- see Gandanameno
Eresus inornatus Pocock, 1898 -- see Gandanameno
Eresus jerbae El-Hennawy, 2005 -- see Loureedia
Eresus lucasi Simon, 1873 -- see Loureedia
Eresus namaquensis Purcell, 1908 -- see Gandanameno
Eresus purcelli Tucker, 1920 -- see Gandanameno
Eresus semicanus Simon, 1908 -- see Loureedia
Eresus spenceri Pocock, 1900 -- see Gandanameno

In synonymy:
Eresus annulatus (Hahn, 1821, removed from S of E. cinnaberinus) = Eresus sandaliatus (Martini & Goeze, 1778) (Ratschker & Bellmann, 1995a: 217).
Eresus guerini Lucas, 1846 = Eresus kollari Rossi, 1846 (Simon, 1911b: 296, sub Eresus niger).
Eresus imperialis Dufour, 1820 = Eresus kollari frontalis Latreille, 1817 (Simon, 1914: 70).
Eresus lautus Simon, 1873 = Eresus solitarius Simon, 1873 (Lehtinen, 1967: 233).
Eresus purpuratus (Panzer, 1804, removed from S of E. cinnaberinus) = Eresus sandaliatus (Martini & Goeze, 1778) (Ratschker & Bellmann, 1995a: 217).

Nomina dubia:
Eresus albomarginatus Lucas, 1864: 29 (m, Senegal) -- El-Hennawy, 2004b: 34.
Eresus ater Walckenaer, 1805: 21, pl. 3, f. 25-26 (m, Italy) -- Řezáč, Pekár & Johannesen, 2008: 270.
Eresus cinnaberinus (Olivier, 1789: 221, m, Italy, originally in Aranea) * -- Řezáč, Pekár & Johannesen, 2008: 270.
Eresus dubius (Walckenaer, 1837: 392, m, Italy, originally in Chersis) -- Řezáč, Pekár & Johannesen, 2008: 270.
Eresus illustris C. L. Koch, 1837a: 105, f. 317 (m, possibly Hungary) -- Řezáč, Pekár & Johannesen, 2008: 270.
Eresus moniliger (Villers, 1789: 128, pl. 11, f. 8, f, France, originally in Aranea) -- Řezáč, Pekár & Johannesen, 2008: 270.
Eresus niger (Petagna, 1787: 34, 1792: 437, m, Italy, originally in Aranea) -- Řezáč, Pekár & Johannesen, 2008: 270.
Eresus petagnae Audouin, 1826: 151, pl. 4, f. 11 (f, Egypt, Syria) -- El-Hennawy, 2004b: 33.
Eresus pulchellus Lucas, 1864: 29 (f, Egypt) -- El-Hennawy, 2004b: 33.
Eresus quatuorguttatus (Rossi, 1790: 135, pl. 1, f. 8-9, m, Italy, originally in Aranea) -- Řezáč, Pekár & Johannesen, 2008: 270.

Eresus adaleari Zamani & Szűts, in Zamani, Altın & Szűts, 2020: 561, f. 1-14, 26-27 (Dm).

Eresus albopictus Simon, 1873d: 352, pl. 10, f. 12 (Df).
Eresus albopictus Simon, 1911b: 295 (S of Eresus lucasi; rejected by Henriques et al., 2018: 5).
Dorceus albopictus Lehtinen, 1967: 231 (T from Eresus).
Eresus albopictus El-Hennawy, 2002: 70 (T from Dorceus).
Eresus albopictus Henriques et al., 2018: 5 (specimens from Morocco and Algeria may belong to a Loureedia species; see Eresus elhennawyi).

Eresus niger bifasciatus Ermolajev, 1937b: 599, 606, f. 1 (Dm).
Eresus bifasciatus Azarkina & Trilikauskas, 2012: 205, f. 5-8, pl. I, f. 6 (elevated m to species).

Eresus crassitibialis Wunderlich, 1987a: 103, f. 272-276 (Dmf).
Eresus crassitibialis Řezáč, Vaněk & Střeštík, 2023: 346, f. 1f-h, 2c-d, 3c-d, 4c-d, 5c-d, 7a-c, 8g-h, 9b, d, f (mf).

Eresus da Lin & Li, in Lin et al., 2022d: 3, f. 1E, 2A-B, 3A-B, 4A (Df).

Eresus albopictus El-Hennawy, 2016b: 108, f. 1-5 (f; misidentified per Řezáč, Vaněk & Střeštík, 2023: 341).
Eresus elhennawyi Řezáč, Vaněk & Střeštík, 2023: 341, f. 1a-e, 2a-b, 3a-b, 4a-b, 5a-b, 6a-c, 8a-f, 9a, c, e (Dmf).

Eresus granosus Simon, 1895c: 331 (Dm).
Eresus granosus Ermolajev, 1928b: 100, f. 3 (m).
Eresus granosus Zhang & Wang, 2017: 266, 5 f. (mf).

Eresus kollari Kovács, Szinetár & Török, 2010: 139, f. 1C-F, 2D (f, misidentified, per Kovács et al., 2015: 15).
Eresus hermani Kovács et al., 2015: 15, f. 1A-B, 3A-C, 4A-C, 5A-B, 6A-B, 7A (Dmf).

Aranea cinnaberinus Walckenaer, 1802: 249 (misidentified).
Aranea quatuorguttata Coquebert de Montbret, 1804: 122, pl. 27, f. 12 (m, misidentified).
Eresus cinnaberinus Walckenaer, 1805: 21 (misidentified).
Eresus cinnaberinus Hahn, 1821: 1, pl. 2, f. A (m, misidentified).
Eresus quatuorguttatus Hahn, 1832: 45, f. 35 (f, misidentified).
Eresus cinnaberinus Walckenaer, 1837: 395 (f, misidentified).
Eresus 4-guttatus C. L. Koch, 1837a: 104, f. 316 (m, misidentified).
Eresus cinnaberinus C. L. Koch, 1837a: 106, f. 318 (m, misidentified).
Eresus kollari Rossi, 1846: 17 (Df).
Eresus guerinii Lucas, 1846: 133, pl. 4, f. 10 (Df) [urn:lsid:nmbe.ch:spidersp:058485].
Eresus fulvus Rossi, 1846: 17 (Dm; N.B.: possibly valid, per Rezác, Pekár & Johannesen, 2008: 275).
Erythrophorus 4-guttatus C. L. Koch, 1850: 71.
Erythrophorus cinnaberinus C. L. Koch, 1850: 71.
Chersis niger Canestrini & Pavesi, 1868: 812.
Eresus cinnaberinus Hansen, 1882: 50, pl. 3, f. 9.
Eresus niger Chyzer & Kulczyński, 1891: 152, pl. 6, f. 22 (mf).
Eresus niger Simon, 1892a: 251, 254, f. 203-204, 209 (mf).
Eresus cinnaberinus Becker, 1896: (2): 2, pl. 1, f. 1 (mf).
Eresus niger Bösenberg, 1903: 411, pl. 39, f. 606 (mf).
Eresus niger Kulczyński, 1903b: 637, pl. 1, f. 1-2 (m).
Eresus niger Simon, 1911b: 296 (S of Eresus guerini).
Eresus niger Berland, 1913c: 39, f. 38-41.
Eresus niger Reimoser, 1931b: 59, f. 2 (mf).
Eresus niger Giltay, 1932: 11, f. 5 (m).
Eresus niger Nakatsudi, 1942b: 8, f. 1A-B (m).
Eresus niger Locket & Millidge, 1951: 50, f. 15A, 19 (mf).
Eresus niger Wiehle, 1953: 71, f. 155-161 (mf).
Eresus guerini Bonnet, 1956: 1730.
Eresus niger Namkung, 1964: 33, f. 5a-c (mf).
Eresus niger Brændegaard, 1966: 36, f. 20-22 (mf; N.B.: may be E. sandaliatus).
Eresus niger Lehtinen, 1967: 462, f. 467 (m).
Eresus niger Azheganova, 1968: 21, f. 24 (m).
Eresus niger Loksa, 1969: 20, f. 12, 13A-D (mf).
Eresus niger Miller, 1971: 55, pl. II, f. 8-9 (f).
Eresus niger Paik, 1978e: 179, f. 72.1-3 (mf).
Eresus cinnaberinus Brignoli, 1978o: 288, f. 11 (f).
Eresus niger Hu, 1984: 51, f. 47.1-4 (m).
Eresus niger Roberts, 1985: 46, f. 12b (mf).
Eresus niger Zhu & Shi, 1985: 52, f. 42a-c (m).
Eresus niger Nenilin & Pestova, 1986: 1734, f. 1-2, 7 (mf, S of Eresus tristis, rejected by Marusik & Azarkina, 2020: 471).
Eresus niger Song, 1987: 63, f. 29 (m).
Eresus niger Zhang, 1987: 47, f. 33.1-3 (mf).
Eresus cinnaberinus Wunderlich, 1987a: 103, f. 277-279 (f).
Eresus niger Feng, 1990: 31, f. 6.1-4 (mf).
Eresus niger Chen & Gao, 1990: 23, f. 25a-b (m).
Eresus niger Ergashev, 1990: 16, f. 1-10 (mf).
Eresus niger Heimer & Nentwig, 1991: 52, f. 112 (mf).
Eresus niger Zhao, 1993: 61, f. 23a-c (m).
Eresus niger Danilov, 1994: 200, f. 1 (m).
Eresus niger Wang, 1994d: 11, f. 1-3 (m).
Eresus cinnaberinus Ratschker, 1995: 723, f. 1-2 (mf, possibly aberrant population).
Eresus niger Zhao, 1995: 781, f. 359a-c (m).
Eresus cinnaberinus Ratschker & Bellmann, 1995a: 217, f. 1-2 (mf).
Eresus cinnaberinus Melic, 1995b: 9, f. 2-9 (mf).
Eresus cinnaberinus Ratschker & Bellmann, 1995b: 807, f. 3-4 (mf).
Eresus niger Mcheidze, 1997: 47, f. 24-28 (m).
Eresus cinnaberinus Bellmann, 1997: 38, f. (mf).
Eresus cinnaberinus Roberts, 1998: 80, f. (mf).
Eresus cinnaberinus Song, Zhu & Chen, 1999: 74, f. 11L, 31A-B (m).
Eresus cinnaberinus Song, Zhu & Chen, 2001: 79, f. 35A-D (mf).
Eresus cinnaberinus Namkung, 2002: 62, f. 9.1a-b (mf).
Eresus cinnaberinus Namkung, 2003: 64, f. 9.1a-b (mf).
Eresus cinnaberinus Marusik, Guseinov & Aliev, 2005: 138, f. 9 (f).
Eresus kollari Řezáč, Pekár & Johannesen, 2008: 267, f. 1A-C, 2A-J, R, 3A-J, R, 4A, D, G, J, 5A, D (mf, considered the earliest identifiable name for the widespread species of this genus).
Eresus kollari Kovács, Szinetár & Török, 2010: 139, f. 2B, F (mf; not f. 1C-F, 2D =E. hermani).
Eresus niger Le Peru, 2011: 320, f. 554 (mf).
Eresus kollari Lecigne, 2011: 15, f. pp. 15-16 (f).
Eresus kollari Miller et al., 2012: 61, f. 2B, 9A-D, 13A-C, 16H, K, 43A-J, 44A-F, 45E-F, 46A-F (m; not f. 2A =E. hermani).
Eresus cinnaberinus Azarkina & Trilikauskas, 2012: 207, f. 9-12, pl. I, f. 7 (m).
Eresus kollari Kovács et al., 2015: 14, f. 1E-F, 3G-I, 4G-I, 5E-F, 7C (mf).
Eresus kollari Krejčí, Řezáč & Michalik, 2015: 184, f. 1A, 4 (f).
Eresus kollari Pérez-Zarcos & Sánchez-Piñero, 2016: 350, f. 1a-c (f).
Eresus kollari Zamani, Altın & Szűts, 2020: 566, f. 23, 30-31, 35 (cf.) (m).
Eresus kollari Marusik & Azarkina, 2020: 471, f. 2-4,13 (m).
Eresus kollari Kim, 2021: 181, f. 79A-K, pl. 36-37 (mf).
Eresus kollari Zhang, Peng & Zhang, 2022: 25, f. 9A-F (mf).
Eresus kollari Zarikian, 2022a: 759, f. 1 (m).
Eresus kollari Lin et al., 2022d: 5, f. 4B (f).
Eresus kollari Řezáč, Vaněk & Střeštík, 2023: 343 (S of Eresus guerini is certainly incorrect).
Eresus cf. kollari Seropian et al., 2023: S1, f. S1 (m).
Eresus kollari Geci et al., 2023: 541, f. 14-15 (m).

Eresus frontalis Latreille, 1817: vol. 10, p. 393 (D; N.B.: Eresus frontalis and E. imperialis have priority over E. kollari).
Eresus imperialis Dufour, 1820a: 357, pl. 69, f. 2 (Df) [urn:lsid:nmbe.ch:spidersp:053854].
Eresus frontalis Walckenaer, 1837: 396 (Df).
Eresus kollari frontalis Simon, 1914: 70 (S of Eresus imperialis).
Eresus frontalis Bacelar, 1936: 180, f. 1 (Df).

Eresus ruficapillus Simon, 1873d: 351, pl. 10, f. 13 (f, misidentified).
Eresus niger ignicomis Simon, 1914: 70, 71 (Df; N.B.: probably a valid species, per Rezác, Pekár & Johannesen, 2008: 275).
Eresus kollari ignicomis Canard & Cruveillier, 2016: 44 (correction from ignicomus to ignicomis).

Eresus niger latefasciatus Simon, 1911b: 297 (Dm).

Eresus tricolor Simon, 1873d: 348, pl. 10, f. 10-11 (Df; N.B.: probably a valid species, per Rezác, Pekár & Johannesen, 2008: 275).
Eresus niger tricolor Simon, 1914: 69.

Eresus lavrosiae Mcheidze, 1997: 48, f. 29 (Dm).
Eresus lavrosiae Zamani, Altın & Szűts, 2020: 564, f. 15-22, 28-29, 34 (m).

Eresus lishizheni Lin, Marusik & Li, in Lin et al., 2021a: 109, f. 18A-E, 19A-C (Dm).

Eresus ruficapillus Herman, 1879: 293 (m, misidentified).
Eresus cinnaberinus Thaler & Knoflach, 2002b: 425, f. 19-22 (m, misidentified).
Eresus moravicus Řezáč, Pekár & Johannesen, 2008: 274, f. 2K-Q, 3K-Q, 4B, E, H, K, 5B, E (Dmf).
Eresus moravicus Kovács, Szinetár & Török, 2010: 139, f. 1A-B, 2A, C, E (mf).
Eresus moravicus Le Peru, 2011: 319, f. 553 (f).
Eresus moravicus Kovács et al., 2015: 14, f. 1C-D, 3D-F, 4D-F, 5C-D, 7B (mf).
Eresus moravicus Zamani, Altın & Szűts, 2020: 566, f. 24, 32-33 (m).
Eresus moravicus Naumova & Deltshev, 2021: 65, f. 3-7 (mf).
Eresus moravicus Popovici, Iorgu & Urák, 2022: 31, f. 1-2 (m).
Eresus moravicus Yanul, Terekhova & Polchaninova, 2022: 182, f. 1-5 (m, f habitus).

Eresus pharaonis Walckenaer, 1837: 396 (Df).
Eresa (Erythrophora) pharaonis Simon, 1864: 300.
Eresus pharaonis El-Hennawy, 2004b: 26, f. 1A-E (f).

Eresus robustus Franganillo, 1918b: 122 (Df).
Eresus robustus Breitling et al., 2016b: 53 (species inquirenda).

Eresus rotundiceps Simon, 1873d: 344 (Dm).

Eresus ruficapillus C. L. Koch, 1846: 4, f. 1080 (Df).

Aranea sandaliata Martini & Goeze, 1778: 287 (D).
Aranea purpurata Panzer, 1804b: 47, pl. 32, f. 20 (Dm) [urn:lsid:nmbe.ch:spidersp:036962].
Eresus annulatus Hahn, 1821: 1, pl. 2, f. B (Dm) [urn:lsid:nmbe.ch:spidersp:005832].
Eresus annulatus Hahn, 1832: 47, f. 36 (m, Df).
Eresus annulatus C. L. Koch, 1846: 14, f. 1087 (m).
Erythrophorus annulatus C. L. Koch, 1850: 71.
Eresus cinnaberinus Blackwall, 1861a: 46, pl. 3, f. 23 (mf, misidentified).
Eresus sandaliatus Ratschker & Bellmann, 1995a: 217, f. 3-4 (mf, formerly treated as senior S of E. cinnaberinus but suppressed for lack of usage, now considered a separate species, S of Eresus annulatus and E. purpuratus).
Eresus sandaliatus Ratschker & Bellmann, 1995b: 807, f. 5-6 (mf).
Eresus sandaliatus Bellmann, 1997: 40, f. (mf).
Eresus sandaliatus Roberts, 1998: 80, f. (mf).
Eresus sandaliatus Almquist, 2005: 41, f. 73a-c (m).
Eresus sandaliatus Topçu, Demir & Seyyar, 2005: 115, f. 4 (f).
Eresus sandaliatus Řezáč, Pekár & Johannesen, 2008: 276, f. 2S-AA, 3S-AA, 4C, F, I, L, 5C, F (mf).
Eresus sandaliatus Le Peru, 2011: 320, f. 558 (mf).
Eresus sandaliatus Miller et al., 2012: 62, f. 16I, L, 45A-D (f).
Eresus sandaliatus Kovács et al., 2015: 14, f. 1G-H, 3J-L, 4J-L, 5G-H, 7D (mf).
Eresus sandaliatus Schendel et al., 2018: 241, f. 3U-X (f).

Eresus sedilloti Simon, 1881c: 133 (Dm).
Eresus sedilloti Bacelar, 1936: 181, f. 2-3 (m).
Eresus sedilloti Le Peru, 2011: 321, f. 559 (m).
Eresus sedilloti Hoyas & Ferrández, 2023: 70, f. 3-4 (m).

Eresus solitarius Simon, 1873a: 154 (Dm).
Eresus lautus Simon, 1873a: 156 (Dm) [urn:lsid:nmbe.ch:spidersp:036961].
Eresus solitarius Bacelar, 1936: 182, f. 4 (m).
Eresus solitarius Lehtinen, 1967: 233 (S of Eresus lautus).
Eresus solitarius Le Peru, 2011: 321, f. 560 (m).
Eresus cf. solitarius Breitling, 2020: 343, f. 8B, 10A (m).

Eresus tristis Kroneberg, 1875: 44, pl. 4, f. 31 (Dm).
Eresus niger Nenilin & Pestova, 1986: 1734, f. 3-4 (m, S of Eresus tristis, rejected by Marusik & Azarkina, 2020: 471).
Eresus tristis Wang, 1994d: 12, f. 4-6 (m; misidentified per Marusik & Azarkina, 2020: 472).
Eresus tristis Song, Zhu & Chen, 1999: 74, f. 31C-D (m; misidentified per Marusik & Azarkina, 2020: 472).
Eresus tristis Marusik & Azarkina, 2020: 471, f. 1, 5-10 (m, removed from S of Eresus kollari).

Eresus walckenaer Brullé, 1832: 54, pl. 28, f. 4 (Df).
Eresus audouin Brullé, 1832: 54, pl. 28, f. 10 (Dm).
Eresus theis Brullé, 1832: 54, pl. 28, f. 11 (Df).
Eresus ctenizoides C. L. Koch, 1836a: 19, f. 176 (Df).
Eresus luridus C. L. Koch, 1836a: 20, f. 177 (Df).
Eresus walckenaeri Walckenaer, 1837: 398 (Dm).
Eresus puniceus C. L. Koch, 1837a: 102, f. 315 (Dm).
Eresus pruinosus C. L. Koch, 1846: 3, f. 1079 (Df).
Eresus siculus Lucas, 1864: 28 (Df).
Eresa (Erythrophora) punicea Simon, 1864: 300.
Eresus puniceus Simon, 1873d: 345 (Df).
Eresus walckenaeri Simon, 1885c: 325 (S of Eresus audouin, E. ctenizoides, E. lautus [probably male of E. moerens sensu Simon], E. luridus, E. moerens, E. pruinosus, E. puniceus, E. siculus, E. theis; S of E. lautus rejected by Lehtinen, 1967: 233 and placed as S of E. solitarius; S of E. moerens rejected by Roewer, 1962b: 13 and placed as subspecies of E. walckenaeri).
Eresus Walckenaerius Simon, 1892a: 248, f. 201 (m habitus).
Eresus walckenaeri Kulczyński, 1903b: 636, pl. 1, f. 2 (m).
Eresus walckenaeri Giltay, 1932: 12, f. 6 (m).
Eresus walckenaeri Brignoli, 1978o: 288, f. 10 (m).
Eresus walckenaeri Le Peru, 2011: 321, f. 561 (m).
Eresus walckenaeri Miller et al., 2012: 57, f. 2C-E, 4C, 12J-L, 16G, J, 40A-J, 41A-F, 42A-F (mf).
Eresus walckenaeri Zamani, Altın & Szűts, 2020: 569, f. 25 (m).

Eresus moerens C. L. Koch, 1846: 1, f. 1078 (Df).
Eresus walckenaeri moerens Roewer, 1962b: 13, f. 8 (f, removed from S of E. walckenaeri, rejecting Simon, 1884j: 325, placed as subspecies).

Eresus yukuni Lin & Li, in Lin et al., 2022d: 6, f. 2C-D, 5A-E (Dm).