type Brettus cingulatus Thorell, 1895; gender masculine

N.B.: removed from the synonymy of Portia Karsch, 1878 by Wanless, 1978f: 83.

Transferred to other genera:
Brettus gravelyi Caleb, 2018 -- see Megaeupoa
Brettus martini Simon, 1900 -- see Portia

In synonymy:
Brettus albolimbatus Simon, 1900 = Brettus cingulatus Thorell, 1895 (Ahmed et al., 2017: 3).
Brettus semifimbriatus Simon, 1901 = Brettus cingulatus Thorell, 1895 (Wanless, 1979a: 188).

Brettus adonis Simon, 1900d: 32 (Df).
Portia adonis Simon, 1901a: 402.
Brettus adonis Wanless, 1979a: 186, f. 1B, D, F, H; 2D-E; 3A (Tf from Portia, Dm).
Brettus cf. adonis Caleb, 2020b: 15730, f. 15D, 27N (f).

Brettus anchorum Wanless, 1979a: 188, f. 2F; 3B; 4C-D (Df).
Brettus anchorum Wanless, 1984a: 181, f. 23A-H (Dm).
Brettus anchorum Jastrzebski, 1997c: 702, f. 1-9 (mf).
Brettus anchorum Sen et al., 2015: 43, f. 157-164, pl. 14 (m).
Brettus anchorum Dhali, Saha & Raychaudhuri, 2017: 39, f. 110-115, pl. 16 (m).
Brettus anchorum Wang et al., 2023e: 4, f. 1A-D (f).

Macopaeus celebensis Merian, 1911: 304, f. P1, Q1 (Df).
Brettus celebensis Wanless, 1980a: 220, f. 2A-D (Tf from Macopaeus).

Brettus cingulatus Thorell, 1895b: 355 (Dm).
Brettus albolimbatus Simon, 1900d: 31 (Df) [urn:lsid:nmbe.ch:spidersp:032582].
Brettus semifimbriatus Simon, 1900d: 31 (Df).
Portia semifimbriata Simon, 1901a: 401, f. 416-418.
Portia albolimbata Simon, 1901a: 402.
Portia foveata Strand, 1912a: 148 (provisional name).
Portia cingulata Reimoser, 1925: 90 (f, listed only).
Brettus cingulatus Wanless, 1978f: 83 (Tmf from Portia).
Brettus albolimbatus Wanless, 1979a: 188, f. 2C; 3C-D; 4A-B (Tf from Portia, S).
Brettus cingulatus Wanless, 1979a: 185, f. 1A, C, E, G; 2A-B (m).
Brettus cingulatus Wanless, 1984a: 181, f. 32A-C, 33C-E, 36C-D (m).
Brettus albolimbatus Peng & Kim, 1998: 411, f. 1A-C (f).
Brettus albolimbatus Sen et al., 2015: 43, f. 165-169, pl. 14 (f).
Brettus albolimbatus Roy, Saha & Raychaudhuri, 2016: 23, f. 18A-E, 25G, 27P (f).
Brettus albolimbatus Dhali, Saha & Raychaudhuri, 2017: 40, f. 116-122, pl. 16 (f).
Brettus cingulatus Ahmed et al., 2017: 3, f. 2.1-4, 3.1-7, 4.1-8, 5.1-11, 6.1-11, 8.1-4 (m, S of Brettus albolimbatus).
Brettus cingulatus Patil & Uniyal, 2018a: 105, f. 1A-G (mf).
Brettus albolimbatus Peng, 2020: 48, f. 14a-c (f).
Brettus cingulatus Tam et al., 2021: 1, f. 1-9 (mf).

Macopaeus madagascarensis Peckham & Peckham, 1903: 182, pl. 19, f. 5 (Df).
Brettus madagascarensis Wanless, 1980a: 221, f. 3A-D (Tf from Macopaeus).

Brettus storki Logunov & Azarkina, 2008a: 98, f. 1-10 (Dmf).