In synonymy:
Cenobiopelma Mello-Leitão & Arlé, 1934 = Dolichothele Mello-Leitão, 1923 (Raven, 1985a: 150, sub Oligoxystre)
Goniodontium Mello-Leitão, 1923 = Dolichothele Mello-Leitão, 1923 (Lucas & Indicatti, 2015: 205, contra Raven, 1985a: 153, who considered it a synonym of Hapalotremus)
Oligoxystre Vellard, 1924 = Dolichothele Mello-Leitão, 1923 (Lucas & Indicatti, 2015: 205)
Pseudoligoxystre Vol, 2001 = Dolichothele Mello-Leitão, 1923 (Lucas & Indicatti, 2015: 205, after Guadanucci, 2007: 2 a synonym of Oligoxstre, which itself is a synonym of Dolichothele)

type Dolichothele exilis Mello-Leitão, 1923; gender feminine (see Bonnet, 1956: 1522)

N.B.: transferred from the Barychelidae to the Theraphosidae by Bücherl, Timotheo & Lucas, 1971: 128; removed from the synonymy of Hapalotremus Simon, 1903 by Lucas & Indicatti, 2015: 205 (contra Raven, 1985a: 152); considered a senior synonym of Goniodontium Mello-Leitão, 1923a: 126 [urn:lsid:nmbe.ch:spidergen:05109] (type G. muticum Mello-Leitão, 1923 = Dolichothele exilis Mello-Leitão, 1923), Oligoxystre Vellard, 1924a: 151 [urn:lsid:nmbe.ch:spidergen:00256] (type O. auratum Vellard, 1924) and Pseudoligoxystre Vol, 2001 by Lucas & Indicatti, 2015: 205; Oligoxystre itself considered a senior synonym of Cenobiopelma Mello-Leitão & Arlé, 1934: 126 [urn:lsid:nmbe.ch:spidergen:05095] (type C. mimetica Mello-Leitão & Arlé, 1934) (transferred from the Barychelidae by Gerschman & Schiapelli, 1970a: 152) by Raven, 1985a: 150 and of Pseudoligoxystre Vol, 2001b: 3 [urn:lsid:nmbe.ch:spidergen:03430] (type P. bolivianum Vol, 2001) by Guadanucci, 2007: 2.

In synonymy:
Dolichothele caatinga (Guadanucci, 2007, T from Oligoxystre) = Dolichothele exilis Mello-Leitão, 1923 (Lucas & Indicatti, 2015: 207).
Dolichothele mutica (Mello-Leitão, 1923, T from Hapalotremus) = Dolichothele exilis Mello-Leitão, 1923 (Lucas & Indicatti, 2015: 207).
Dolichothele nigrioculata (Bücherl, Timotheo & Lucas, 1971, T from Nemesia) = Dolichothele exilis Mello-Leitão, 1923 (Lucas & Indicatti, 2015: 207).

Nomen dubium:
Dolichothele mimetica (Mello-Leitão & Arlé, 1934: 127, f. 4-8, f, Brazil, originally in Cenobiopelma) -- Guadanucci, 2007: 19.

Oligoxystre auratum Vellard, 1924a: 152, pl. 10, f. 38 (Dm).
Dolichothele auratum Lucas & Indicatti, 2015: 207 (T from Oligoxystre).

Pseudoligoxystre bolivianus Vol, 2001b: 3, f. 1-7 (Dmf).
Pseudoligoxystre bolivianus Peters, 2003: 280, f. 1119-1121 (mf).
Pseudoligoxystre bolivianus Peters, 2005b: 98, f. 313-317 (mf).
Oligoxystre bolivianum Guadanucci, 2007: 4, f. 1-12 (mf).
Dolichothele bolivianum Lucas & Indicatti, 2015: 207 (T from Oligoxystre).
Dolichothele bolivianum Revollo, Silva & Bertani, 2017: 3, f. 1-8, 25, 28-29 (mf).

Dolichothele camargorum Revollo, Silva & Bertani, 2017: 11, f. 14-23, 26-27, 32-35 (Dmf).

Oligoxystre diamantinensis Bertani, Santos & Righi, 2009: 44, f. 1-8 (Dmf).
Dolichothele diamantinensis Lucas & Indicatti, 2015: 207 (T from Oligoxystre).
Dolichothele diamantinensis Guadanucci, 2020: 87, f. 3.3F-I (m).

Oligoxystre dominguense Guadanucci, 2007: 13, f. 25-29 (Dmf: N.B.: spelling dominguiense in legend is a lapsus).
Dolichothele dominguense Lucas & Indicatti, 2015: 207 (T from Oligoxystre).

Dolichothele exilis Mello-Leitão, 1923a: 120 (Df).
Goniodontium muticum Mello-Leitão, 1923a: 127 (Df) [urn:lsid:nmbe.ch:spidersp:002035].
Dolichothele exilis Bücherl, Timotheo & Lucas, 1971: 127, f. 52 (f).
Leptopelma nigrioculatum Bücherl, Timotheo & Lucas, 1971: 128, f. 53 (Dm) [urn:lsid:nmbe.ch:spidersp:053045].
Ischnocolus nigrioculatum Raven, 1985a: 43, 155 (T from Leptopelma).
Nemesia nigrioculata Raven, 1990: 21 (T from Ischnocolus).
Dolichothele exilis Schmidt, 2002b: 16, f. 1 (f).
Dolichothele exilis Schmidt, 2003l: 196, f. 559 (f).
Oligoxystre caatinga Guadanucci, 2007: 12, f. 21-24,38 (Dmf) [urn:lsid:nmbe.ch:spidersp:037715].
Hapalotremus exilis Cavallo & Ferretti, 2015: 882 (species inquirenda).
Hapalotremus muticus Cavallo & Ferretti, 2015: 883 (species inquirenda).
Dolichothele exilis Lucas & Indicatti, 2015: 207, f. 1-10 (f, T from Hapalotremus, S of Hapalotremus muticus, Oligoxystre caatinga and Nemesia nigrioculata).
Dolichothele exilis Guadanucci, 2020: 87, f. 3.3J, 3.5I (f).

Oligoxystre mineirum Guadanucci, 2011a: 321, f. 3-6 (Dmf).
Dolichothele mineirum Lucas & Indicatti, 2015: 207 (T from Oligoxystre).

Dolichothele mottai Revollo, Silva & Bertani, 2017: 7, f. 9-13, 24, 30-31 (Dmf).

Oligoxystre rufoniger Guadanucci, 2007: 17, f. 34-37, 39 (Dmf).
Dolichothele rufoniger Lucas & Indicatti, 2015: 207 (T from Oligoxystre).

Oligoxystre tucuruiense Guadanucci, 2007: 15, f. 30-33 (Dmf).
Dolichothele tucuruiense Lucas & Indicatti, 2015: 207 (T from Oligoxystre).