In synonymy:
Microcentria Schenkel, 1925 = Diplocentria Hull, 1911 (Wunderlich, 1970: 407)
Scotoussa Bishop & Crosby, 1938 = Diplocentria Hull, 1911 (Holm, 1945b: 19)
Smodigoides Crosby & Bishop, 1936 = Diplocentria Hull, 1911 (Holm, 1945b: 20, sub Microcentria)

type Tmeticus rivalis O. Pickard-Cambridge, 1906; gender feminine; syn. of Diplocentria bidentata (Emerton, 1882)

N.B.: considered a senior synonym of Scotoussa Bishop & Crosby, 1938: 87 [urn:lsid:nmbe.ch:spidergen:05275] (type Tmeticus bidentatus Emerton, 1882) by Holm, 1945b: 19 and Chamberlin & Ivie, 1945b: 10, and of Microcentria Schenkel, 1925a: 297 [urn:lsid:nmbe.ch:spidergen:05276] (type M. pusilla Schenkel, 1925 = Diplocentria rectangulata (Emerton, 1915)) by Wunderlich, 1970: 407; Microcentria considered a senior synonym of Smodigoides Crosby & Bishop, 1936a: 52 [urn:lsid:nmbe.ch:spidergen:05277] (type Tmeticus rectangulatus Emerton, 1915) by Holm, 1945b: 20; Millidge's (1977: 40) placement of Microcentria as a junior synonym of Asthenargus Simon & Fage, 1922 instead has not been accepted by later authors, including Millidge, 1984a; not a senior synonym of Mioxena Simon, 1926 (Denis, 1947c: 82).

Transferred to other genera:
Diplocentria acoreensis Wunderlich, 1992 -- see Acorigone
Diplocentria blanda (Simon, 1884) -- see Mioxena
Diplocentria corynetes Chamberlin & Ivie, 1945 -- see Oreonetides
Diplocentria replicata Holm, 1950 -- see Wabasso
Diplocentria saxetorum Hull, 1916 -- see Caviphantes
Diplocentria thoracica (Emerton, 1913) -- see Vermontia

In synonymy:
Diplocentria harmsi (Wunderlich, 1972, T from Collinsia) = Diplocentria mediocris (Simon, 1884) (Millidge, 1977: 55, sub Gongylidiellum).
Diplocentria pusilla (Schenkel, 1925) = Diplocentria rectangulata (Emerton, 1915) (Holm, 1945b: 19, sub Microcentria).
Diplocentria rivalis (O. Pickard-Cambridge, 1905) = Diplocentria bidentata (Emerton, 1882) (Holm, 1945b: 19, Chamberlin & Ivie, 1945b: 11).
Diplocentria tigana (Chamberlin & Ivie, 1933, T from Eulaira) = Diplocentria bidentata (Emerton, 1882) (Chamberlin & Ivie, 1945b: 11).

Tmeticus bidentatus Emerton, 1882: 56, pl. 17, f. 2 (Dm).
Gongylidium bidentatum Simon, 1884a: 500.
Erigone bidentata Marx, 1890a: 533.
Oedothorax bidentatus Crosby, 1905a: 310.
Tmeticus rivalis O. Pickard-Cambridge, 1906a: 61, pl. A, f. 14-18 (Dmf).
Centromerus subalpinus Lessert, 1907: 116, f. 14-15, 17 (Dm; not f).
Centromerus rivalis O. Pickard-Cambridge, 1910: 104.
Centromerus subalpinus Lessert, 1910b: 222, f. 125-126, 128 (m; not f).
Diplocentria rivalis Hull, 1911a: 581.
Diplocentria rivalis Schenkel, 1925d: 300, f. 9 (f).
Eulaira tigana Chamberlin & Ivie, 1933a: 15, pl. 1, f. 6, pl. 10, f. 85 (Dmf).
Scotoussa bidentata Bishop & Crosby, 1938: 87, pl. 6, f. 69-71 (m, Df).
Diplocentria rivalis Holm, 1939b: 23, f. 10c (f).
Diplocentria bidentata Holm, 1945b: 19 (S).
Diplocentria bidentata Chamberlin & Ivie, 1945b: 11, f. 21-26 (mf, S).
Diplocentria bidentata Denis, 1947c: 80, f. 1 (m).
Scotoussa bidentata Kaston, 1948: 212, f. 658 (m).
Diplocentria bidentata Locket & Millidge, 1953: 307, f. 186D-F (mf).
Diplocentria bidentata Tullgren, 1955: 332, f. 35a-c (m).
Diplocentria bidentata Brændegaard, 1958: 58, f. 54A-C (m).
Diplocentria bidentata Wiehle, 1960a: 428, f. 785-790 (mf).
Diplocentria bidentata Merrett, 1963b: 406, f. 76A-B (m).
Diplocentria bidentata Palmgren, 1976: 52, f. 13.7-9 (mf).
Diplocentria bidentata Millidge, 1977: 6, f. 2 (m).
Diplocentria bidentata Millidge, 1984a: 157, f. 131-132, 135, 141, 146, 148-149, 156, 160 (mf).
Diplocentria bidentata Roberts, 1987: 94, f. 42d (mf).
Diplocentria bidentata Heimer & Nentwig, 1991: 140, f. 392 (mf).
Diplocentria bidentata Fei, Zhu & Gao, 1994: 48, f. 3-8 (mf).
Diplocentria bidentata Agnarsson, 1996: 106, f. 109A-B (mf).
Diplocentria bidentata Song, Zhu & Chen, 1999: 167, f. 91O-R (mf).
Diplocentria bidentata Hormiga, 2000: 32, f. 5A-H, pl. 18A-F, 77A (mf).
Diplocentria bidentata Paquin & Dupérré, 2003: 97, f. 898-900 (mf).
Diplocentria bidentata Merrett & Dawson, 2005: 119, f. 19-20 (f).

Diplocentria changajensis Wunderlich, 1995e: 495, f. 69-72 (Dm).

Diplocentria forsslundi Holm, 1939b: 21, f. 10a-b (Df).

Sisicottus hibernus Barrows, 1945: 74, pl. II, f. 1-2 (Dm).
Carorita hiberna Zujko-Miller, 1999: 50, f. 1-7 (Tm from Sisicottus).
Diplocentria hiberna Tanasevitch, 2007a: 147 (Tm from Carorita).

Gongylidiellum mediocre Simon, 1884a: 607, f. 425-426 (Dm).
Collinsia harmsi Wunderlich, 1972b: 304, f. 29-32 (Dmf).
"Gongylidiellum" mediocre Millidge, 1977: 6, 55, f. 6 (m, S of Collinsia harmsi).
Diplocentria (?) mediocris Thaler, 1986a: 487, f. 12-15 (m, T from Gongylidiellum).
Gongylidiellum mediocre Heimer & Nentwig, 1991: 164, f. 446 (mf).

Maso perplexa Chamberlin & Ivie, 1939a: 64, f. 48-49 (Dm).
Diplocentria perplexa Chamberlin & Ivie, 1945b: 11, f. 28 (Tm from Maso).
Diplocentria perplexa Millidge, 1984a: 158, f. 133-134, 136, 142, 145, 147, 150-151, 157, 161 (m, Df).
Diplocentria perplexa Paquin & Dupérré, 2003: 97, f. 901-903 (mf).

Tmeticus rectangulatus Emerton, 1915a: 137, pl. 1, f. 4 (Dm).
Microcentria pusilla Schenkel, 1925d: 297, f. 8 (Dmf) [urn:lsid:nmbe.ch:spidersp:059492].
Parerigone rectangulatus Crosby, 1926: 4.
Microcentria pusilla Holm, 1939b: 23, f. 10d (f).
Eperigone rectangulata Roewer, 1942a: 718.
Microcentria rectangulata Holm, 1945b: 19 (T from Eperigone, S of Microcentria pusilla).
Microcentria pusilla Wiehle, 1960a: 547, f. 1017-1022 (mf).
Microcentria pusilla Hauge, 1969: 6, f. 13-14 (mf).
Microcentria pusilla Miller, 1971: 277, pl. LIX, f. 1-2 (mf).
Microcentria pusilla Palmgren, 1976: 82, f. 10.22-24 (mf).
Microcentria rectangulata Millidge, 1977: 40, f. 160 (m).
Microcentria rectangulata Thaler, 1980a: 586, f. 22, 27-29 (mf).
Diplocentria rectangulata Millidge, 1984a: 158, f. 137-138, 143, 152-153, 159, 162 (mf).
Microcentria rectangulata Heimer & Nentwig, 1991: 216, f. 582 (mf).
Diplocentria rectangulata Paquin & Dupérré, 2003: 98, f. 904-906 (mf).
Diplocentria rectangulata Marusik, 2015: 686, f. 14S-T (mf).

Smodigoides retinax Crosby & Bishop, 1936b: 53, pl. 4, f. 4 (Dm).
Diplocentria retinax Millidge, 1984a: 159, f. 139-140, 144, 154-155, 158 (m, Df).
Diplocentria retinax Paquin & Dupérré, 2003: 98, f. 907-909 (mf).