In synonymy:
Perissoblemma O. Pickard-Cambridge, 1881 = Trechalea Thorell, 1869 (Simon, 1898a: 315)
Triclaria C. L. Koch, 1847 = Trechalea Thorell, 1869 (Thorell, 1869: 37, preoccupied, replacement name)

type Triclaria longitarsis C. L. Koch, 1847; gender feminine

N.B.: replacement name for Triclaria C. L. Koch, 1847: vol. 15: 65 [urn:lsid:nmbe.ch:spidergen:04846], preoccuppied in Aves by Wagler, 1832; considered a senior synonym of Perissoblemma O. Pickard-Cambridge, 1881d: 773 [urn:lsid:nmbe.ch:spidergen:05896] (type P. thomisiforme O. Pickard-Cambridge, 1881, a nomen dubium) by Simon, 1898a: 315; placed in the "Trechalea genus-group" by Sierwald, 1990: 51, after Carico, 1986; see Sierwald's f. 31-33, 46 for palpal morphology.

Transferred to other genera:
Trechalea aurantia Mello-Leitão, 1942 -- see Hesydrus
Trechalea biocellata Mello-Leitão, 1926 -- see Trechaleoides
Trechalea boliviensis Carico, 1993 -- see Syntrechalea
Trechalea colombiana (Silva & Lise, 2008) -- see Syntrechalea
Trechalea keyserlingi F. O. Pickard-Cambridge, 1903 -- see Trechaleoides
Trechalea langei Mello-Leitão, 1947 -- see Paratrechalea
Trechalea limai Mello-Leitão, 1941 -- see Paratrechalea
Trechalea lomalinda Carico, 1993 -- see Syntrechalea
Trechalea monticola Chamberlin, 1916 -- see Hesydrus
Trechalea numida Mello-Leitão, 1943 -- see Thaumasia
Trechalea ornata Mello-Leitão, 1943 -- see Paratrechalea
Trechalea protenta Karsch, 1879 -- see Paradossenus
Trechalea reimoseri Caporiacco, 1947 -- see Syntrechalea
Trechalea syntrechaloides Mello-Leitão, 1941 -- see Syntrechalea
Trechalea wygodzinskyi Soares & Camargo, 1948 -- see Paratrechalea

In synonymy:
Trechalea cezariana Mello-Leitão, 1931 = Trechalea bucculenta (Simon, 1898) (Carico, 2005a: 786).
Trechalea ellacombei F. O. Pickard-Cambridge, 1903 = Trechalea macconnelli Pocock, 1900 (Carico, 1993b: 244).
Trechalea magnifica Petrunkevitch, 1925 = Trechalea extensa (O. Pickard-Cambridge, 1896) (Carico, 1993b: 248).
Trechalea manauensis Carico, 1985 = Trechalea amazonica F. O. Pickard-Cambridge, 1903 (Carico, 1993b: 251).
Trechalea rothi Carico & Silva, 2010 = Trechalea amazonica F. O. Pickard-Cambridge, 1903 (Silva & Lise, 2010d: 67).
Trechalea trinidadensis Carico, 1993 = Trechalea amazonica F. O. Pickard-Cambridge, 1903 (Silva & Lise, 2010d: 67).
Trechalea urinator Simon, 1898 = Trechalea longitarsis (C. L. Koch, 1847) (Carico, 1993b: 238).

Nomen dubium:
Trechalea thomisiformis (O. Pickard-Cambridge, 1881d: 774, pl. 66, f. 6, j, Brazil, originally in Perissoblemma) -- Carico, 1993b: 237.

Trechalea amazonica F. O. Pickard-Cambridge, 1903c: 163, pl. 15, f. 18-20 (Dmf).
Trechalea manauensis Carico, in Carico, Adis & Penny, 1985: 289, f. 1-4 (Dmf) [urn:lsid:nmbe.ch:spidersp:056735].
Trechalea amazonica Carico, 1993b: 251, f. 22, 32, 61-64 (mf, S of Trechalea manauensis).
Trechalea trinidadensis Carico, 1993b: 255, f. 73-74 (Df) [urn:lsid:nmbe.ch:spidersp:019498].
Trechalea trinidadensis Carico, 2008b: 171, f. 1-2 (Dm).
Trechalea rothi Carico & Silva, 2010b: 357, f. 1-3 (Df) [urn:lsid:nmbe.ch:spidersp:043501].
Trechalea amazonica Silva & Lise, 2010d: 67 (S of Trechalea rothi and T. trinidadensis).

Hesydrus bucculentus Simon, 1898f: 20 (Df).
Trechalea cezariana Mello-Leitão, 1931a: 12, f. 2 (Df) [urn:lsid:nmbe.ch:spidersp:019485].
Trechalea cezariana Carico, 1993b: 240, f. 16, 26, 35-38 (f, Dm).
Trechalea bucculenta Carico, 2005a: 786 (mf, T from Hesydrus, S of Trechalea cezariana).

Triclaria connexa O. Pickard-Cambridge, 1898a: 233, pl. 30, f. 1 (Dm).
Trechalea connexa F. O. Pickard-Cambridge, 1902a: 313, pl. 30, f. 17 (m).
Trechalea connexa F. O. Pickard-Cambridge, 1903c: 162, pl. 15, f. 9-10 (f. 17 sub convexa) (m).
Trechalea connexa Carico, 1993b: 247, f. 19, 29, 49-52 (m, Df).
Trechalea connexa Silva-Dávila, 2003: 45, f. 16c (m).

Triclaria extensa O. Pickard-Cambridge, 1896a: 174, pl. 22, f. 10 (Dm).
Trechalea extensa F. O. Pickard-Cambridge, 1902a: 313, pl. 30, f. 16 (m).
Trechalea extensa F. O. Pickard-Cambridge, 1903c: 162, pl. 15, f. 11-12 (m).
Trechalea magnifica Petrunkevitch, 1925a: 169, f. 89 (Df) [urn:lsid:nmbe.ch:spidersp:056734].
Trechalea extensa Carico, 1993b: 248, f. 20, 30, 53-56 (mf, S of Trechalea magnifica).

Trechalea gertschi Carico & Minch, 1981: 154, f. 1-4 (Dmf).
Trechalea gertschi Carico, 1993b: 249, f. 1-2, 21, 31, 57-60 (mf).

Triclaria longitarsis C. L. Koch, 1847: 65, f. 1462 (Df).
Trechalea longitarsis Simon, 1898a: 315, f. 286, 316-318, 325-326.
Trechalea urinator Simon, 1898a: 310, f. 284 (m).
Trechalea urinator Simon, 1898f: 20 (Dmf) [urn:lsid:nmbe.ch:spidersp:056736].
Trechalea longitarsis F. O. Pickard-Cambridge, 1903c: 160, pl. 15, f. 13-17 (f, Dm).
Trechalea urinator F. O. Pickard-Cambridge, 1903c: 161, pl. 15, f. 3-5 (mf).
Trechalea longitarsis Carico, 1993b: 238, f. 7-15, 25 (mf, S of Trechalea urinator).
Trechalea longipes Carico & Silva, 2010a: 234, f. A3-4 (m, lapsus).

Trechalea macconnelli Pocock, 1900d: 67, f. 2e (Dm).
Trechalea ellacombei F. O. Pickard-Cambridge, 1903c: 161, pl. 15, f. 6 (Df) [urn:lsid:nmbe.ch:spidersp:056733].
Trechalea macconnelli F. O. Pickard-Cambridge, 1903c: 162, pl. 15, f. 7-8 (m).
Trechalea macconnelli Carico, 1993b: 244, f. 17, 27, 39, 41-44 (mf, S of Trechalea ellacombei).

Trechalea paucispina Caporiacco, 1947a: 22 (Dmf).
Trechalea paucispina Caporiacco, 1948a: 633, f. 24-26 (mf).
Trechalea paucispina Carico, 1993b: 245, f. 18, 28, 45-48 (mf).

Trechalea tirimbina Silva & Lapinski, 2012: 59, f. 3-19 (Dmf).