In synonymy:
Agersborgia Strand, 1936 = Pycnothele Chamberlin, 1917 (Lucas & Bücherl, 1973: 241)
Androthelopsis Mello-Leitão, 1934 = Pycnothele Chamberlin, 1917 (Pérez-Miles & Capocasale, 1989: 288)
Bayana Pérez-Miles, Costa & Montes de Oca, 2014 = Pycnothele Chamberlin, 1917 (Montes de Oca et al., 2022: 11)
Heteromma Mello-Leitão, 1935 = Pycnothele Chamberlin, 1917 (Lucas & Bücherl, 1973: 241, preoccupied, automatically with its replacement name Agersborgia)
Neostothis Vellard, 1925 = Pycnothele Chamberlin, 1917 (Montes de Oca et al., 2022: 11)
Pycnothelopsis Schiapelli & Gerschman, 1942 = Pycnothele Chamberlin, 1917 (Raven, 1985a: 101, sub Androthelopsis)

type Pycnothele perdita Chamberlin, 1917; gender feminine

N.B.: transferred from the Pycnothelidae to Nemesiidae (Pycnothenidae) by Raven, 1985a: 79 and back by revalidation of the family by Opatova et al., 2020: 701; considered a senior synonym of Agersborgia Strand, 1936: 167 [urn:lsid:nmbe.ch:spidergen:05004] (type Heteromma anomala Mello-Leitão, 1935 = Pycnothele perdita Chamberlin, 1917) (transferred from the Barychelidae to the Pycnothelidae) by Lucas & Bücherl, 1973: 241, Agersborgia is a replacement name for Heteromma Mello-Leitão, 1935c: 356 [urn:lsid:nmbe.ch:spidergen:05009], preoccupied in fossil Araneae by Menge, 1856; considered a senior synonym of Androthelopsis Mello-Leitão, 1934c: 401 [urn:lsid:nmbe.ch:spidergen:05005] (type A. singularis Mello-Leitão, 1934) (transferred from the Barychelidae to the Pycnothelidae by Lucas & Bücherl, 1973: 239) by Pérez-Miles & Capocasale, 1989: 288, Androthelopsis considered a senior synonym of Pycnothelopsis Schiapelli & Gerschman, 1942: 319 [urn:lsid:nmbe.ch:spidergen:05014] (type P. modesta Schiapelli & Gerschman, 1942) by Raven, 1985a: 101; considered a senior synonym of Neostothis Vellard, 1925: 79 [urn:lsid:nmbe.ch:spidergen:00126] (type N. gigas Vellard, 1925) by Montes de Oca et al., 2022: 11; Neostothis was removed from the synonymy of Chaco Tullgren, 1905 by Goloboff, 1995: 169; considered a senior synonym of Bayana Pérez-Miles, Costa & Montes de Oca, 2014: 1938 [urn:lsid:nmbe.ch:spidergen:04216] (type B. labordai Pérez-Miles, Costa & Montes de Oca, 2014) by Montes de Oca et al., 2022: 11.

Transferred to other genera:
Pycnothele piracicabensis (Piza, 1938) -- see Rachias
Pycnothele tacuariensis (Pérez-Miles & Capocasale, 1982) -- see Acanthogonatus

In synonymy:
Pycnothele anomala (Mello-Leitão, 1935) = Pycnothele perdita Chamberlin, 1917 (Lucas & Bücherl, 1973: 241).

Pycnothele arapongas Passanha et al., 2014: 237, f. 28-32, 61-63 (Dmf).

Pycnothele araraquara Passanha et al., 2014: 242, f. 43-46, 68 (Dm).

Psalistops auripilus Mello-Leitão, 1946c: 8, f. 12 (Dm).
Psalistops auripilus Bücherl, 1957: 388, f. 23 (m).
Pycnothelopsis modesta Schiapelli & Gerschman, 1971: 61 (T from Psalistops, S of Psalistops auripilus; rejected by Capocasale & Pérez-Miles, 1979).
Pycnothelopsis auripilus Capocasale & Pérez-Miles, 1979: 3, f. 2 (m, removed from S of Pycnothelopsis modesta; f (f. 1, 4-6) = Acanthogonatus tacuariensis per Pérez-Miles & Capocasale, 1982: 2).
Pycnothelopsis auripilus Pérez-Miles & Capocasale, 1982: 6, pl. 2, f. 2 (m).
Androthelopsis auripilus Raven, 1985a: 100, 102 (removed m from S of Pycnothele auronitens, rejected by Pérez-Miles & Capocasale, 1989).
Pycnothele auronitens Goloboff, 1995: 133, f. 18, 54, 116A (f; misidentified per Passanha et al., 2014: 245).
Pycnothele auripila Passanha et al., 2014: 245, f. 52-55, 71 (m, removed Sm from P. auronitens, contra Pérez-Miles & Capocasale, 1989: 289 (after Pérez-Miles & Capocasale, 1983: 2), after Raven, 1985a: 100, 102).

Trechona auronitens Keyserling, 1891: 18, pl. 1, f. 3 (Dm).
Crypsidromus auronitens Simon, 1903a: 931.
Metriopelma auronitens Pocock, 1903b: 114.
Pycnothele auronitens Gerschman & Schiapelli, 1970c: 100, f. 1-4 (Tm from Crypsidromus).
Pycnothelopsis auronitens Pérez-Miles & Capocasale, 1983: 2 (Tm from Pycnothele, rejected by Raven, 1985, S).
Pycnothele auronitens Raven, 1985a: 100 (Tm from Pycnothelopsis).
Pycnothele auronitens Pérez-Miles & Capocasale, 1989: 289, f. 1-2, 7, 10, 13, 16 (m, S).
Pycnothele auronitens Goloboff, 1995: 133, f. 116B (m; not Df=P. auripila, per Passanha et al., 2014: 245).
Pycnothele auronitens Passanha et al., 2014: 242, f. 47-51, 69-70 (m, Df).

Pycnothele gauderio Passanha et al., 2014: 233, f. 8-12, 58-59 (Dmf).

Neostothis gigas Vellard, 1925: 79, 82, pl. 15 (Dmf).
Neostothis gigas Goloboff, 1995: 168 (Tmf from Chaco).
Neostothis gigas Lucas et al., 2008: 472, f. 1a-d, 2a-f (mf).
Pycnothele gigas Montes de Oca et al., 2022: 13 (T from Neostothis).

Pycnothele jatai Passanha et al., 2014: 241, f. 38-42, 66-67 (Dmf).

Bayana labordai Pérez-Miles, Costa & Montes de Oca, 2014: 1940, f. 1, 2A-D, 3A-C, 4A-B, 5A-B, 6 (Dmf).
Pycnothele labordai Montes de Oca et al., 2022: 14 (T from Bayana).

Pycnothelopsis modestus Schiapelli & Gerschman, 1942: 320, f. 4-6 (Dm).
Pycnothelopsis modesta Bücherl, 1957: 405, f. 95-95a (m).
Pycnothelopsis modestus Schiapelli & Gerschman, 1967b: 59, f. 9-13 (m).
Pycnothelopsis modestus Pérez-Miles & Capocasale, 1982: 6, pl. 2, f. 1 (m).
Androthelopsis modestus Raven, 1985a: 101, f. 113-119 (m).
Pycnothele modesta Goloboff, 1995: 130, f. 17, 53, 114A-D, 115A-I (removed m from S of P. singularis, contra Pérez-Miles & Capocasale, 1989: 291, Df).
Pycnothele modesta Passanha et al., 2014: 245, f. 72-78 (mf).

Pycnothele perditus Chamberlin, 1917: 27, pl. 1, f. 1-4 (Dmf).
Heteromma anomala Mello-Leitão, 1935c: 356, f. 2-4 (Dm) [urn:lsid:nmbe.ch:spidersp:039411].
Agersborgia anomala Strand, 1936: 167 (generic replacement name).
Agersborgia anomala Bücherl, 1957: 388, f. 24 (m).
Pycnothele perdita Bücherl, 1957: 405, f. 96 (m).
Pycnothele perdita Schiapelli & Gerschman, 1967b: 54, f. 1-8 (mf).
Pycnothele perditum Lucas & Bücherl, 1973: 241 (S of Agersborgia anomala).
Pycnothele perdita Raven, 1985a: 100, f. 103-112 (m).
Pycnothele perdita Pérez-Miles & Capocasale, 1989: 290, f. 3-4, 9, 12, 15, 17 (m).
Pycnothele perdita Passanha et al., 2014: 230, f. 1, 3-7, 13-22, 56-57 (mf).

Pycnothele rubra Passanha et al., 2014: 234, f. 2, 23-27, 60-61 (Dmf).

Androthelopsis singularis Mello-Leitão, 1934c: 402, f. 1-2 (Dm).
Androthelopsis singularis Lucas & Bücherl, 1973: 238, f. 1 (m).
Pycnothele singularis Pérez-Miles & Capocasale, 1989: 291, f. 5-6, 8, 11, 14, 18 (m, S, rejected).
Pycnothele singularis Passanha et al., 2014: 238, f. 33-37, 64-65 (m, Df).