In synonymy:
Micronetata Dahl, 1912 = Maro O. Pickard-Cambridge, 1907 (Wiehle, 1956: 133)

type Maro minutus O. Pickard-Cambridge, 1907; gender masculine

N.B.: considered a senior synonym of Micronetata Dahl, 1912b: 612 [urn:lsid:nmbe.ch:spidergen:03834] (type Micronetata pallida Dahl, 1912 = Maro minutus O. Pickard-Cambridge, 1907) by Wiehle, 1956: 133.

Transferred to other genera:
Maro amplus Dondale & Buckle, 2001 -- see Oreonetides
Maro apertus Holm, 1939 -- see Sisicus
Maro borealis Eskov, 1991 -- see Boreomaro
Maro bulbosus Zhao & Li, 2014 -- see Oreonetides
Maro falconeri Jackson, 1908 -- see Jacksonella
Maro lautus Saito, 1984 -- see Erigomicronus
Maro persimilis O. Pickard-Cambridge, 1912 -- see Centromerus
Maro thaleri Saaristo, 1971 -- see Pseudocarorita

In synonymy:
Maro confusus (Wunderlich, 1995, T from Oreonetides) = Maro flavescens (O. Pickard-Cambridge, 1873) (Tanasevitch, 2006a: 265).
Maro humicola Falconer, 1919 = Maro minutus O. Pickard-Cambridge, 1907 (Locket & Millidge, 1953: 348).
Maro minutissimus (Schenkel, 1929, T from Gongylidiellum) = Maro minutus O. Pickard-Cambridge, 1907 (Thaler, 1973a: 50, contra Wunderlich, 1972b: 296, after Locket & Millidge, 1953: 348 and Saaristo, 1971: 470).
Maro nanus (Schenkel, 1939, T from Centromerus) = Maro sublestus Falconer, 1915 (Holm, 1945b: 43).
Maro pallidulus (Schenkel, 1929, T from Centromerus) = Maro minutus O. Pickard-Cambridge, 1907 (von Broen & Moritz, 1963: 382).
Maro pallidus (Dahl, 1912) = Maro minutus O. Pickard-Cambridge, 1907 (Wiehle, 1956: 134).

Maro bureensis Tanasevitch, 2006a: 262, f. 10-15 (Dmf).
Maro bureensis Tanasevitch, 2022f: 344, f. 4-7, 9, 18 (mf).

Erigone flavescens O. Pickard-Cambridge, 1873f: 440, pl. 40, f. 6 (Dmf).
Sintula flavescens Simon, 1884a: 453.
Pseudomaro flavescens Denis, 1966b: 6, f. 10-13 (mf, T from Sintula).
Maro flavescens Saaristo, 1971: 474, f. 32-39 (mf, T from Pseudomaro).
Oreonetides confusus Wunderlich, 1995e: 490, f. 42-46 (Dm) [urn:lsid:nmbe.ch:spidersp:012161].
Maro flavescens Tanasevitch, 2006a: 265, f. 30-42 (mf, S of Oreonetides confusus).

Maro khabarum Tanasevitch, 2006a: 262, f. 16-22 (Dmf).
Maro khabarum Tanasevitch, 2022f: 344, f. 8, 19 (mf).

Maro lehtineni Saaristo, 1971: 475, f. 40-47 (Dmf).
Maro lehtineni Palmgren, 1975: 32, f. 18.7, 9 (mf).
Maro lehtineni Thaler, 1983a: 144, f. 69-70 (m).
Maro lehtineni Heimer & Nentwig, 1991: 206, f. 553 (mf).
Maro lehtineni Agnarsson, 1996: 136, f. 148A-D (mf).
Maro lehtineni Bolzern et al., 2005: 166, f. 1-6 (mf).
Maro lehtineni Wiśniewski & Wesołowska, 2015: 81, f. 3-8 (m).

Maro lepidus Casemir, 1961a: 195, f. 1.1-10 (Df).
Maro lepidus Parker, 1962: 219, f. 9 (f).
Maro lepidus Parker & Duffey, 1963: 257, f. 3, 10 (m).
Maro lepidus Casemir, 1963a: 159, f. I.1-9 (f, Dm).
Maro lepidus Wiehle, 1965a: 33, f. 38-43 (mf).
Maro lepidus Miller, 1966: 161, pl. IV, f. 12-13 (f).
Maro lepidus Miller, 1971: 250, pl. LXII, f. 7 (m).
Maro lepidus Saaristo, 1971: 476, f. 49-56 (mf).
Maro lepidus Locket, Millidge & Merrett, 1974: 106, f. 67A, C (mf).
Maro lepidus Palmgren, 1975: 32, f. 18.5, 8 (mf).
Maro lepidus Roberts, 1987: 126, f. 63c (mf).
Maro lepidus Heimer & Nentwig, 1991: 206, f. 555 (mf).
Maro lepidus Wiśniewski & Wesołowska, 2012: 155, f. 1-7 (mf).

Maro minutus O. Pickard-Cambridge, 1907: 77, 87, pl. 27, f. 12-18 (Df).
Maro minutus Jackson, 1908: 61, pl. 4, f. 21-25 (mf).
Maro minutus O. Pickard-Cambridge, 1909a: 174, f. 26-28 (Dm).
Micronetata pallida Dahl, 1912b: 612 (Dmf) [urn:lsid:nmbe.ch:spidersp:055772].
Maro humicola Falconer, 1919: 300 (Df) [urn:lsid:nmbe.ch:spidersp:055768].
Gongylidiellum minutissimum Schenkel, 1929b: 138, f. 1 (Df) [urn:lsid:nmbe.ch:spidersp:055769].
Centromerus pallidulus Schenkel, 1929b: 139, f. 2 (Dm) [urn:lsid:nmbe.ch:spidersp:055771].
Maro minutus Miller, 1951: 224, pl. I, f. 19-21, pl. II, f. 1 (mf).
Maro minutus Locket & Millidge, 1953: 348, f. 209A-C (mf, S of Gongylidiellum minutissimum and Maro humicola).
Centromerus pallidulus Wiehle, 1956: 75, f. 119 (m).
Maro minutus Wiehle, 1956: 134, f. 228-233 (mf, S of Micronetata pallida).
Maro minutus Denis, 1958a: 9, f. 5 (m).
Maro minutus Parker, 1962: 221, f. 7 (f).
Maro minutus Parker & Duffey, 1963: 261, f. 1, 4, 8 (m).
Maro minutus von Broen & Moritz, 1963: 382 (S of Centromerus pallidulus).
Maro minutus Casemir, 1963a: 163, f. II.1-3 (m).
Maro minutus Merrett, 1963b: 356, f. 8A-C (m).
Maro minutus Locket, 1968: 101, f. 26F (f).
Maro minutus Saaristo, 1971: 470, f. 8-20 (mf).
Maro minutus Miller, 1971: 250, pl. L, f. 17-18, pl. LXII, f. 10 (mf).
Maro minutus Thaler, 1973a: 50 (S of Gongylidiellum minutissimum confirmed, rejecting Wunderlich, 1972b: 296).
Maro minutus Palmgren, 1975: 31, f. 18.6, 11 (mf).
Maro minutus Millidge, 1977: 48, f. 195 (m).
Maro minutus Thaler, 1983a: 144, f. 71-76 (m).
Maro minutus Millidge, 1984b: 244, f. 59-61 (f).
Maro minutus Roberts, 1987: 126, f. 63a (mf).
Maro minutus Izmailova, 1989: 79, f. 60 (f).
Maro minutus Heimer & Nentwig, 1991: 206, f. 554 (mf).
Maro minutus Agnarsson, 1996: 137, f. 149A-D (mf).
Maro minutus Tanasevitch, 2022f: 344, f. 1 (f).

Maro nearcticus Dondale & Buckle, 2001: 10, f. 1-6 (Dmf).
Maro nearcticus Paquin & Dupérré, 2003: 142, f. 1575-1576 (mf).
Maro nearcticus Paquin & Dupérré, 2006: 32, f. 93 (m).
Maro nearcticus Gómez-Rodríguez et al., 2014: 67, f. 2C (f).
Maro nearcticus Tanasevitch, 2022f: 346, f. 10-13 (m).

Maro pansibiricus Tanasevitch, 2006a: 260, f. 1-9 (Dmf).
Maro pansibiricus Tanasevitch, 2022f: 344, f. 3 (f).

Maro perpusillus Saito, 1984: 4, f. 3-4 (Dmf).
Maro perpusillus Ono, Matsuda & Saito, 2009: 318, f. 869-870 (mf).
Maro perpusillus Tanasevitch, 2022f: 346, f. 14-17 (mf).

Maro saaristoi Eskov, 1980a: 1102, f. 5-8 (Dmf).

Maro sibiricus Eskov, 1980a: 1101, f. 1-4 (Dmf).
Maro sibiricus Dondale & Buckle, 2001: 10, f. 7-9 (mf).
Maro sibiricus Tanasevitch, 2022f: 344, f. 2 (f).

Maro sublestus Falconer, 1915: 226, f. (D).
Centromerus nanus Schenkel, 1939: 109, f. 6 (Dm) [urn:lsid:nmbe.ch:spidersp:055770].
Maro sublestus Holm, 1945b: 43, f. 12a-g (m, S of Centromerus nanus).
Maro sublestus Locket & Millidge, 1953: 349, f. 209D-F (mf).
Maro sublestus Parker, 1962: 221, f. 8 (f).
Maro sublestus Parker & Duffey, 1963: 259, f. 2, 5-7, 9 (mf).
Maro sublestus Saaristo, 1971: 472, f. 22-30 (mf).
Maro sublestus Miller, 1971: 251, pl. LXII, f. 8-9 (mf).
Maro sublestus Locket, Millidge & Merrett, 1974: 107, f. 67B, D (mf).
Maro sublestus Palmgren, 1975: 32, f. 18.4, 10 (mf).
Maro sublestus Roberts, 1987: 126, f. 63b (mf).
Maro sublestus Heimer & Nentwig, 1991: 206, f. 556 (mf).
Maro sublestus Szymkowiak, 2004: 139, f. 1-4 (f).

Maro ussuricus Tanasevitch, 2006a: 265, f. 23-29 (Dmf).