World Spider Catalog

Linyphiidae Blackwall, 1859

Family | ACCEPTED

N.B.: for comments on relationships, see Michalik & Hormiga, 2010: 7; re-synonymization of Pimoidae (Murphy & Roberts, 2015: ix) not sufficiently justified and is not accepted here; Sinopimoidae Li & Wunderlich, 2008 [urn:lsid:nmbe.ch:spiderfam:0112] synonymyized with Linyphiidae by Dimitrov et al., 2017: 245; resurrection of Sinopimoidae by Wunderlich, 2020b: 20 is not accepted here, because Dimitrov et al., 2017 was not taken into account; re-elevation of Sinopimoidae to family level by Eskov & Marusik, 2023: 343 not accepted here (by majority vote of the WSC boards); the current status of Sinopimoidae is also maintained for reasons of stability and we wait for a probable confirmation or rejection of this resurrection; Tian et al., 2022 show five subfamilies: Linyphiinae (incl. Mynogleninae Lehtinen, 1967: 250 and Dubiaraneinae Millidge, 1993c: 145), Erigoninae Emerton, 1882: 7, Micronetinae Hull, 1920a: 8, Ipainae Saaristo, 2007b: 34 and Stemonyphantinae Wunderlich, 1986: 120; da Silva-Moreira, Kulkarni & Hormiga, 2025: 60-62 list resp. newly circumscribe six subfamilies: Erigoninae, Lepthyphantinae Simon, 1929: 562, Linyphiinae (syn. nov.: Dubiaraneinae), Mynogleninae, Pocobletinae Silva-Moreira & Hormiga, 2025: 61 (new subfamily) and Stemonyphantinae, state Ipainae and Micronetinae to be polyphyletic, leave several linyphiid clades unranked and also several genera as incertae sedis.

In synonymy:

Aitutakia Marples, 1960 = Mermessus O. Pickard-Cambridge, 1899 (Beatty, Berry & Millidge, 1991: 272, sub Eperigone)

Anerigone Berland, 1932 = Mermessus O. Pickard-Cambridge, 1899 (Jocqué, 1984b: 124, sub Eperigone)

Eperigone Crosby & Bishop, 1928 = Mermessus O. Pickard-Cambridge, 1899 (Miller, 2007a: 122)

Parerigone Berland, 1932 = Mermessus O. Pickard-Cambridge, 1899 (Berland, 1932a: 119, sub Anerigone)

Sinoria Bishop & Crosby, 1938 = Mermessus O. Pickard-Cambridge, 1899 (Miller, 2007a: 122)

Gen. Mermessus O. Pickard-Cambridge, 1899 urn:lsid:nmbe.ch:spidergen:01088

type Mermessus dentiger O. Pickard-Cambridge, 1899; gender masculine

N.B.: considered a senior synonym of Eperigone Crosby & Bishop, 1928a: 46 [urn:lsid:nmbe.ch:spidergen:00953] (type Tmeticus trilobatus Emerton, 1882) and of Sinoria Bishop & Crosby, 1938: 73 [urn:lsid:nmbe.ch:spidergen:01261] (type S. rapidula Bishop & Crosby, 1938) by Miller, 2007a: 122; Eperigone considered a senior synonym of Anerigone Berland, 1932a: 119 (type Erigone brevidentata Emerton, 1909) [urn:lsid:nmbe.ch:spidergen:04897] by Jocqué, 1984b: 124 and of Aitutakia Marples, 1960: 386 [urn:lsid:nmbe.ch:spidergen:04896] (type A. armata Marples, 1960) by Beatty, Berry & Millidge, 1991: 272; Anerigone is a replacement name for Parerigone Berland, 1932a: 76 [urn:lsid:nmbe.ch:spidergen:04900] (type P. fradeorum Berland, 1932), preoccupied in Diptera by Brauer, 1898 and by Crosby & Bishop in Crosby, 1926: 4 (see Collinsia).

Transferred to other genera:

Mermessus rectangulatus (Emerton, 1915) -- see Diplocentria

In synonymy:

Mermessus antillanus (Bryant, 1948) = Mermessus dentiger O. Pickard-Cambridge, 1899 (Millidge, 1987: 18, sub Eperigone serrata)

Mermessus armatus (Marples, 1960) = Mermessus fradeorum (Berland, 1932) (Beatty, Berry & Millidge, 1991: 272, sub Eperigone)

Mermessus atramontensis (Banks, 1911, T from Gongylidium) = Mermessus brevidentatus (Emerton, 1909) (Crosby & Bishop, 1928a: 24, sub Erigone)

Mermessus auritus (Fage, 1938, T from Tmeticus) = Mermessus rapidulus (Bishop & Crosby, 1938) (Miller, 2007a: 126)

Mermessus banksi (Ivie & Barrows, 1935) = Mermessus fradeorum (Berland, 1932) (Millidge, 1987: 36, sub Eperigone)

Mermessus clarcksvillensis (Petrunkevitch, 1925, T from Erigone) = Mermessus tridentatus (Emerton, 1882) (Crosby & Bishop, 1928a: 59, sub Eperigone)

Mermessus credulus (Gertsch & Davis, 1936) = Mermessus bryantae (Ivie & Barrows, 1935) (Millidge, 1987: 17, sub Eperigone)

Mermessus edax (Keyserling, 1886, T from Ceratinopsis) = Mermessus dentimandibulatus (Keyserling, 1886) (Millidge, 1991: 141, sub Eperigone)

Mermessus eschatologicus (Crosby, 1924, T from Eperigone) = Mermessus denticulatus (Banks, 1898) (Miller, 2007a: 132)

Mermessus gnavus (Banks, 1892, T from Tmeticus) = Mermessus trilobatus (Emerton, 1882) (Crosby & Bishop, 1928a: 61, sub Eperigone)

Mermessus ibericus (Barrientos, 2019, T from Tmeticus) = Mermessus denticulatus (Banks, 1898) (Barrientos, 2020: 237)

Mermessus lyra (Chamberlin & Ivie, 1939) = Mermessus bryantae (Ivie & Barrows, 1935) (Millidge, 1987: 17, sub Eperigone)

Mermessus moestus (Banks, 1892, T from Tmeticus) = Mermessus trilobatus (Emerton, 1882) (Crosby, 1905a: 313, 337, sub Oedothorax)

Mermessus multidentatus (Emerton, 1913, T from Tmeticus) = Mermessus brevidentatus (Emerton, 1909) (Crosby & Bishop, 1928a: 24, sub Erigone)

Mermessus palustris (Banks, 1892, T from Tmeticus) = Mermessus trilobatus (Emerton, 1882) (Crosby, 1905a: 313, 337, sub Oedothorax)

Mermessus portoricensis (Petrunkevitch, 1930) = Mermessus tridentatus (Emerton, 1882) (van Helsdingen, 1981a: 232, sub Eperigone)

Mermessus serratus (Ivie & Barrows, 1935, T from Eperigone) = Mermessus dentiger O. Pickard-Cambridge, 1899 (Miller, 2007a: 124)

Mermessus simplex (Emerton, 1913) = Mermessus bryantae (Ivie & Barrows, 1935) (Millidge, 1987: 17, sub Eperigone)

Mermessus simplicius (Roewer, 1942) = Mermessus bryantae (Ivie & Barrows, 1935) (Millidge, 1987: 17, sub Eperigone)

Mermessus tristis (Banks, 1892, T from Bathyphantes) = Mermessus trilobatus (Emerton, 1882) (Ivie, 1967: 127, sub Eperigone)

Mermessus venustus (Banks, 1892, T from Grammonota) = Mermessus tridentatus (Emerton, 1882) (Bishop & Crosby, 1933: 393, sub Eperigone)

Mermessus agressus (Gertsch & Davis, 1937) | | USA, Mexico urn:lsid:nmbe.ch:spidersp:010293

Eperigone agressa Gertsch & Davis, 1937: 26, f. 32-33, 41 (Dmf) Original description

Eperigone agressa Millidge, 1987: 26, f. 86-91 (mf)

Eperigone agressa Millidge, 1988c: 258, f. 23 (m)

Mermessus agressus Miller, 2007a: 123 (T from Eperigone)

Mermessus albulus (Zorsch & Crosby, 1934) | | USA urn:lsid:nmbe.ch:spidersp:010294

Eperigone albula Zorsch & Crosby, 1934: 245, f. 1 (Dmf) Original description

Eperigone albula Millidge, 1987: 2 (misplaced in this genus)

Eperigone albula Cokendolpher & Buckle, 2004: 71, f. 1 (f)

Mermessus albulus Miller, 2007a: 123 (T from Eperigone)

Mermessus annamae (Gertsch & Davis, 1937) | | Mexico urn:lsid:nmbe.ch:spidersp:010295

Eperigone annamae Gertsch & Davis, 1937: 27, f. 34-35 (Dm) Original description

Eperigone annamae Millidge, 1987: 63, f. 257-259 (m)

Mermessus annamae Miller, 2007a: 123 (T from Eperigone)

Mermessus antraeus (Crosby, 1926) | | USA, Mexico urn:lsid:nmbe.ch:spidersp:010296

Parerigone antraea Crosby, 1926: 4, pl. 1, f. 4-6 (Dmf) Original description

Eperigone antraea Crosby & Bishop, 1928a: 47, f. 102-104 (mf)

Eperigone antrea Millidge, 1987: 26, f. 73-79 (mf)

Mermessus antraeus Miller, 2007a: 123 (T from Eperigone)

Mermessus augustae (Crosby & Bishop, 1933) | | Canada, USA urn:lsid:nmbe.ch:spidersp:010297

Eperigone augustae Crosby & Bishop, 1933a: 227, pl. 7, f. 1-4 (Dm) Original description

Eperigone augustae Millidge, 1987: 42, f. 162-164 (m)

Mermessus augustae Miller, 2007a: 123 (T from Eperigone)

Mermessus augustalis (Crosby & Bishop, 1933) | | Canada, USA urn:lsid:nmbe.ch:spidersp:010298

Eperigone augustalis Crosby & Bishop, 1933a: 228, pl. 7, f. 5-7 (Dmf) Original description

Eperigone augustalis Millidge, 1987: 44, f. 157-161 (mf)

Eperigone augustalis Paquin & Dupérré, 2003: 99, f. 930-932 (mf)

Mermessus augustalis Miller, 2007a: 123 (T from Eperigone)

Mermessus avius (Millidge, 1987) | | Mexico urn:lsid:nmbe.ch:spidersp:010299

Eperigone avia Millidge, 1987: 50, f. 194-196 (Df) Original description

Mermessus avius Miller, 2007a: 123 (T from Eperigone)

Mermessus brevidentatus (Emerton, 1909) | | USA urn:lsid:nmbe.ch:spidersp:010300

Erigone brevidentatus Emerton, 1909: 194, pl. 2, f. 10 (Dmf) Original description

Gongylidium atramontensis Banks, 1911: 447, pl. 34, f. 5, 8 (Dm) [urn:lsid:nmbe.ch:spidersp:064518]

Tmeticus multidentatus Emerton, 1913a: 216, pl. 2, f. 1 (Dm) [urn:lsid:nmbe.ch:spidersp:064519]

Erigone brevidentata Crosby & Bishop, 1928a: 24, f. 32-36 (m, S of Gongylidium atramontense and Tmeticus multidentatus)

Parerigone brevidentata Berland, 1932a: 79 (generic name preoccupied)

Anerigone brevidentata Berland, 1932a: 119 (generic replacement name)

Erigone brevidentata Kaston, 1948: 192, f. 628, 662-663 (m)

Erigone brevidentata Buckle et al., 2001: 116 (rather to Eperigone)

Erigone brevidentata Paquin & Dupérré, 2003: 103, f. 994-998 (mf)

Mermessus brevidentatus Miller, 2007a: 123 (T from Erigone)

Mermessus bryantae (Ivie & Barrows, 1935) | | North America, Cuba, Venezuela. Introduced to Azores urn:lsid:nmbe.ch:spidersp:010301

Bathyphantes floridanus Banks, 1896e: 68 (f; misidentified per Ivie, 1969: 6)

Tmeticus simplex Emerton, 1913a: 216, pl. 2, f. 3 (Dm; preoccupied by O. Pickard-Cambridge, 1892, see Lessertia dentichelis) [urn:lsid:nmbe.ch:spidersp:064329]

Parerigone simplex Crosby, 1926: 4

Eperigone simplex Crosby & Bishop, 1928a: 58, f. 136-138 (m)

Eperigone bryanti Ivie & Barrows, 1935: 12, pl. 4, f. 28-30 (Dmf; N.B.: not mentioned if patronym for Elisabeth or Owen Bryant) Original description

Eperigone credula Gertsch & Davis, 1936: 2, f. 3-4 (Dm) [urn:lsid:nmbe.ch:spidersp:064150]

Eperigone lyra Chamberlin & Ivie, 1939a: 59, f. 7 (Df; specific epithet is a noun) [urn:lsid:nmbe.ch:spidersp:064152]

Eperigone simplicia Roewer, 1942a: 718 (replacement name for Eperigone simplex) [urn:lsid:nmbe.ch:spidersp:064154]

Eperigone bryantae Bonnet, 1956: 1707 (emendation from bryanti: "L'espèce étant dediée a Miss Bryant doit se nommer bryantae")

Eperigone bryantae Millidge, 1987: 17, f. 29-35 (mf, S of Eperigone credula, E. lyra, E. simplex Emerton and E. simplicia)

Eperigone bryantae Wunderlich, 1992a: 24, f. 449 (f)

Mermessus bryantae Miller, 2007a: 123 (T from Eperigone)

Mermessus caelebs (Millidge, 1987) | | Panama, Venezuela urn:lsid:nmbe.ch:spidersp:010302

Eperigone caelebs Millidge, 1987: 71, f. 299-300 (Df) Original description

Mermessus caelebs Miller, 2007a: 123 (T from Eperigone)

Mermessus coahuilanus (Gertsch & Davis, 1940) | | USA, Mexico urn:lsid:nmbe.ch:spidersp:010303

Eperigone coahuilana Gertsch & Davis, 1940a: 1, f. 1-2 (Dm) Original description

Eperigone coahuilana Millidge, 1987: 58, f. 236-241 (m, Df)

Mermessus coahuilanus Miller, 2007a: 123 (T from Eperigone)

Mermessus cognatus (Millidge, 1987) | | Mexico to Costa Rica urn:lsid:nmbe.ch:spidersp:010304

Eperigone cognata Millidge, 1987: 72, f. 303-307 (Dmf) Original description

Mermessus cognatus Miller, 2007a: 123 (T from Eperigone)

Mermessus colimus (Millidge, 1987) | | Mexico urn:lsid:nmbe.ch:spidersp:010305

Eperigone colima Millidge, 1987: 48, f. 188-190 (Df) Original description

Mermessus colimus Miller, 2007a: 123 (T from Eperigone)

Mermessus comes (Millidge, 1987) | | Mexico urn:lsid:nmbe.ch:spidersp:010306

Eperigone comes Millidge, 1987: 67, f. 276-278 (Dm) Original description

Mermessus comes Miller, 2007a: 123 (T from Eperigone)

Mermessus conexus (Millidge, 1987) | | Mexico urn:lsid:nmbe.ch:spidersp:010307

Eperigone conexa Millidge, 1987: 56, f. 234-235 (Df) Original description

Mermessus conexus Miller, 2007a: 123 (T from Eperigone)

Mermessus conjunctus (Millidge, 1991) | | Brazil urn:lsid:nmbe.ch:spidersp:010308

Eperigone conjuncta Millidge, 1991: 141, f. 573-575 (Df) Original description

Mermessus conjunctus Miller, 2007a: 123 (T from Eperigone)

Mermessus contortus (Emerton, 1882) | | USA urn:lsid:nmbe.ch:spidersp:010309

Tmeticus contortus Emerton, 1882: 54, pl. 15, f. 5 (Dm) Original description

Gongylidium contortum Simon, 1884a: 500

Erigone contortus Marx, 1890a: 533

Oedothorax contortus Crosby, 1905a: 311

Eperigone contorta Crosby & Bishop, 1928a: 48, f. 105, 107-108 (m, Df)

Eperigone contorta Kaston, 1948: 195, f. 650-651 (m)

Eperigone contorta Millidge, 1987: 11, f. 9-14 (m, Df)

Eperigone contorta Edwards, 1993a: 253, f. 13-15 (f)

Mermessus contortus Miller, 2007a: 123 (T from Eperigone)

Mermessus datangensis Irfan, Zhang & Peng, 2022 | | China urn:lsid:nmbe.ch:spidersp:057085

Mermessus datangensis Irfan, Zhang & Peng, 2022: 166, f. 190A-D, 191A-C, 192A-F (Dmf) Original description

Mermessus denticulatus (Banks, 1898) | | Canada to Peru, Caribbean. Introduced to Europe, North Africa, Turkey urn:lsid:nmbe.ch:spidersp:009730

Tmeticus denticulatus Banks, 1898b: 243, pl. 14, f. 29 (Df; preoccupied by Hull, 1896, see Halorates reprobus) Original description

Erigone eschatologica Crosby in Chamberlin, 1924b: 643, f. 85, 87-88 (Dm; f f. 86 see Mermessus perplexus) [urn:lsid:nmbe.ch:spidersp:010314]

Eperigone eschatologica Crosby & Bishop, 1928a: 51, f. 113-114 (m; mf f. 115-116 see Mermessus perplexus)

Centromerus denticulatus Roewer, 1942a: 532

Eperigone eschatologica Millidge, 1987: 37, f. 132-136 (mf)

Eperigone eschatologica Breene et al., 1993: 109, f. 175A-D (mf)

Eperigone eschatologica Klein, Stock & Wunderlich, 1995: 302, f. 4-7 (mf)

Eperigone eschatologica Prinsen, 1996b: 1, f. 1-7 (mf)

Eperigone eschatologica Bosmans, 2007: 124, f. 25-31 (mf)

Mermessus denticulatus Miller, 2007a: 132, f. 92G-H (mf, T from Centromerus, S of Erigone eschatologica)

Mermessus denticulatus van Helsdingen, 2009c: 618, f. 1-10 (mf)

Mermessus denticulatus El-Hennawy, 2012: 189, f. 1-5 (m)

Mermessus denticulatus Oger & Picard, 2014: 2, f. 1-3(right), 5-6 (mf)

Mermessus denticulatus Reiser & Neumann, 2015: 125, f. 1-2 (f)

Paratmeticus sp. Barrientos et al., 2016: 93, f. 2-6 (m; here per Barrientos et al., 2019a: 43)

Mermessus denticulatus El-Hennawy, 2017b: 205, f. 55a-c, 56a (m)

Mermessus denticulatus Danışman & Coşar, 2019a: 80, f. 1A-B, 2, 3 (m)

Tmeticus ibericus Barrientos in Barrientos et al., 2019a: 43, f. 2-10 (Dmf) [urn:lsid:nmbe.ch:spidersp:051269]

Mermessus denticulatus Barrientos, 2020: 237 (S of Tmeticus ibericus)

Mermessus denticulatus Lecigne, 2021a: 21, f. 17 (m)

Mermessus denticulatus Rehfeldt & Cassar, 2024: 28, f. 19a-d (f)

Mermessus denticulatus Lecigne, Moutaouakil & Lips, 2025: 136, f. 79D-J (f)

Mermessus dentiger O. Pickard-Cambridge, 1899 | | USA to Guatemala, Caribbean urn:lsid:nmbe.ch:spidersp:011735 TYPE SPECIES

Mermessus dentiger O. Pickard-Cambridge, 1899a: 292, pl. 39, f. 5 (Dm) Original description

Eperigone serrata Ivie & Barrows, 1935: 10, pl. 3, f. 25, pl. 4, f. 26-27 (Dmf) [urn:lsid:nmbe.ch:spidersp:010356]

Eperigone antillana Bryant, 1948b: 388, f. 69, 72, 74 (Dmf) [urn:lsid:nmbe.ch:spidersp:036949]

Eperigone serrata Millidge, 1987: 18, f. 43-48 (mf, S of Eperigone antillana)

Mermessus dentiger Miller & Hormiga, 2004: 413, f. 18D, F, 20J (mf)

Mermessus dentiger Miller, 2007a: 124, f. 71I, 91A-G, 93A-F, 94A-F, 95A-C (mf, S of Eperigone serrata)

Mermessus dentimandibulatus (Keyserling, 1886) | | Colombia, Peru urn:lsid:nmbe.ch:spidersp:010310

Erigone dentimandibulata Keyserling, 1886b: 163, pl. 16, f. 226 (Dm) Original description

Erigone edax Keyserling, 1886b: 175, pl. 17, f. 235 (Df) [urn:lsid:nmbe.ch:spidersp:064151]

Ceratinopsis edax Mello-Leitão, 1941b: 251 (T from Erigone)

Eperigone dentimandibulata Millidge, 1991: 141, f. 576-570 (mf, T from Erigone, S of Ceratinopsis edax)

Eperigone dentimandibulata Prinsen, 1996b: 2, f. 9 (m)

Mermessus dentimandibulatus Miller, 2007a: 123 (T from Eperigone)

Mermessus dominicus (Millidge, 1987) | | Dominican Rep. urn:lsid:nmbe.ch:spidersp:010311

Eperigone dominica Millidge, 1987: 50, f. 197-201 (Dmf) Original description

Mermessus dominicus Miller, 2007a: 123 (T from Eperigone)

Mermessus dopainus (Chamberlin & Ivie, 1936) | | Mexico urn:lsid:nmbe.ch:spidersp:010312

Eperigone dopainum Chamberlin & Ivie, 1936a: 42, pl. 11, f. 99-101 (Df) Original description

Eperigone dopaina Roewer, 1942a: 716

Mermessus dopainus Miller, 2007a: 123 (T from Eperigone)

Mermessus entomologicus (Emerton, 1911) | | Canada, USA urn:lsid:nmbe.ch:spidersp:010313

Tmeticus entomologicus Emerton, 1911: 395, pl. 3, f. 3 (Dm) Original description

Parerigone entomologica Crosby, 1926: 4

Eperigone entomologica Crosby & Bishop, 1928a: 50, f. 109-112 (m, Df)

Eperigone entomologica Millidge, 1987: 40, f. 141-146, 166 (mf)

Eperigone entomologica Paquin & Dupérré, 2003: 100, f. 933-935 (mf)

Mermessus entomologicus Miller, 2007a: 123 (T from Eperigone)

Mermessus estrellae (Millidge, 1987) | | Mexico urn:lsid:nmbe.ch:spidersp:010315

Eperigone estrellae Millidge, 1987: 46, f. 179-184 (Dmf) Original description

Mermessus estrellae Miller, 2007a: 123 (T from Eperigone)

Mermessus facetus (Millidge, 1987) | | Costa Rica urn:lsid:nmbe.ch:spidersp:010316

Eperigone faceta Millidge, 1987: 54, f. 213-215 (Dm) Original description

Mermessus facetus Miller, 2007a: 123 (T from Eperigone)

Mermessus floridus (Millidge, 1987) | | USA urn:lsid:nmbe.ch:spidersp:010317

Eperigone florida Millidge, 1987: 33, f. 92-94 (Dm) Original description

Mermessus floridus Miller, 2007a: 123 (T from Eperigone)

Mermessus formosus (Millidge, 1987) | | Mexico urn:lsid:nmbe.ch:spidersp:010318

Eperigone formosa Millidge, 1987: 46, f. 174-178 (Dmf) Original description

Mermessus formosus Miller, 2007a: 123 (T from Eperigone)

Mermessus fractus (Millidge, 1987) | | Costa Rica urn:lsid:nmbe.ch:spidersp:010319

Eperigone fracta Millidge, 1987: 54, f. 216-218 (Dm) Original description

Mermessus fractus Miller, 2007a: 123 (T from Eperigone)

Mermessus fradeorum (Berland, 1932) | | North America. Introduced to Galapagos, Uruguay, Azores, Cyprus, South Africa, Saudi Arabia, China, New Zealand urn:lsid:nmbe.ch:spidersp:010320

Parerigone fradeorum Berland, 1932a: 76, f. 3-11 (Dmf) Original description

Anerigone fradeorum Berland, 1932a: 119 (generic replacement name)

Eperigone banksi Ivie & Barrows, 1935: 8, pl. 3, f. 20-24 (Dmf) [urn:lsid:nmbe.ch:spidersp:064149]

Aitutakia armata Marples, 1960: 386, f. 2a-c (Dm) [urn:lsid:nmbe.ch:spidersp:064148]

Anerigone fradeorum Denis, 1964a: 80, f. 3-4 (f)

Eperigone fradeorum Jocqué, 1984b: 124, f. 3-5 (m)

Eperigone fradeorum Millidge, 1987: 35, f. 124-131 (mf, S of Eperigone banksi)

Eperigone fradeorum Millidge, 1988a: 67, f. 302-303, 333-339 (mf)

Eperigone fradeorum Beatty, Berry & Millidge, 1991: 272 (S of Eperigone armata)

Eperigone fradeorum Gao, Ren & Zhu, 1994: 52, f. 1-6 (mf)

Eperigone fradeorum Prinsen, 1996b: 2, f. 8 (m)

Eperigone fradeorum Song, Zhu & Chen, 1999: 167, f. 93D-E, H-I (mf)

Mermessus fradeorum Miller, 2007a: 123 (T from Eperigone)

Mermessus fradeorum Tanasevitch, 2010a: 16, f. 12-19 (mf)

Mermessus fradeorum El-Hennawy et al., 2015: 119, f. 1-11 (mf)

Mermessus fradeorum Baert et al., 2023: 12, f. 44A-C (mf)

Mermessus fradeorum Cajade et al., 2024c: 6, f. 1C-D, 3D-G (mf)

Mermessus fuscus (Millidge, 1987) | | Mexico urn:lsid:nmbe.ch:spidersp:010321

Eperigone fusca Millidge, 1987: 65, f. 270-272 (Df) Original description

Mermessus fuscus Miller, 2007a: 123 (T from Eperigone)

Mermessus hebes (Millidge, 1991) | | Venezuela urn:lsid:nmbe.ch:spidersp:010322

Eperigone hebes Millidge, 1991: 138, f. 561-563 (Dm) Original description

Mermessus hebes Miller, 2007a: 123 (T from Eperigone)

Mermessus holda (Chamberlin & Ivie, 1939) | | Canada, USA urn:lsid:nmbe.ch:spidersp:010323

Eperigone holda Chamberlin & Ivie, 1939a: 59, f. 8-9 (Df; specific epithet is a noun) Original description

Eperigone holda Millidge, 1987: 13, f. 21-24 (f)

Mermessus holdus Miller, 2007a: 123 (T from Eperigone)

Mermessus hospita (Millidge, 1987) | | Mexico urn:lsid:nmbe.ch:spidersp:010324

Eperigone hospita Millidge, 1987: 70, f. 295-298 (Df) Original description

Mermessus hospita Miller, 2007a: 123 (T from Eperigone)

Mermessus ignobilis (Millidge, 1987) | | Mexico urn:lsid:nmbe.ch:spidersp:010325

Eperigone ignobilis Millidge, 1987: 52, f. 210-212 (Dm) Original description

Mermessus ignobilis Miller, 2007a: 123 (T from Eperigone)

Mermessus imago (Millidge, 1987) | | Mexico urn:lsid:nmbe.ch:spidersp:010326

Eperigone imago Millidge, 1987: 68, f. 288-290 (Dm) Original description

Mermessus imago Miller, 2007a: 123 (T from Eperigone)

Mermessus index (Emerton, 1914) | | Canada, USA urn:lsid:nmbe.ch:spidersp:010327

Tmeticus index Emerton, 1914: 263, pl. 8, f. 6 (Dm) Original description

Parerigone index Crosby, 1926: 4

Eperigone index Crosby & Bishop, 1928a: 52, f. 117-120 (m, Df)

Eperigone index Millidge, 1987: 42, f. 147-151 (mf)

Eperigone index Paquin & Dupérré, 2003: 100, f. 936-938 (mf)

Mermessus index Miller, 2007a: 123 (T from Eperigone)

Mermessus indicabilis (Crosby & Bishop, 1928) | | Canada, USA urn:lsid:nmbe.ch:spidersp:010328

Eperigone indicabilis Crosby & Bishop, 1928a: 53, f. 121-126 (Dmf) Original description

Eperigone indicabilis Millidge, 1987: 42, f. 152-156 (mf)

Mermessus indicabilis Miller, 2007a: 123 (T from Eperigone)

Mermessus inornatus (Ivie & Barrows, 1935) | | USA urn:lsid:nmbe.ch:spidersp:010329

Eperigone inornata Ivie & Barrows, 1935: 10, pl. 4, f. 31-32 (Dm) Original description

Eperigone inornata Millidge, 1987: 18, f. 36-42 (m, Df)

Mermessus inornatus Miller, 2007a: 123 (T from Eperigone)

Mermessus insulsus (Millidge, 1991) | | Peru urn:lsid:nmbe.ch:spidersp:010330

Eperigone insulsa Millidge, 1991: 141, f. 571-572 (Df) Original description

Mermessus insulsus Miller, 2007a: 123 (T from Eperigone)

Mermessus jona (Bishop & Crosby, 1938) | | Canada, USA urn:lsid:nmbe.ch:spidersp:012601

Scyletria jona Bishop & Crosby, 1938: 90, pl. 7, f. 75-76 (Dm) Original description

Mermessus jona Patrick, Dupérré & Dondale, 2008: 35, f. 5-12 (m, Df, T from Scyletria)

Mermessus leoninus (Millidge, 1987) | | Mexico urn:lsid:nmbe.ch:spidersp:010331

Eperigone leonina Millidge, 1987: 65, f. 265-269 (Dmf) Original description

Mermessus leoninus Miller, 2007a: 123 (T from Eperigone)

Mermessus libanus (Millidge, 1987) | | Mexico urn:lsid:nmbe.ch:spidersp:010332

Eperigone libana Millidge, 1987: 71, f. 301-302 (Df) Original description

Mermessus libanus Miller, 2007a: 123 (T from Eperigone)

Mermessus lindrothi (Holm, 1960) | | Alaska urn:lsid:nmbe.ch:spidersp:010333

Eperigone lindrothi Holm, 1960b: 113, f. 16-18 (Dmf) Original description

Eperigone lindrothi Millidge, 1987: 24, f. 64-68 (mf)

Mermessus lindrothi Miller, 2007a: 123 (T from Eperigone)

Mermessus maculatus (Banks, 1892) | | Russia (Commander Is.), Canada to Guatemala urn:lsid:nmbe.ch:spidersp:010334

Tmeticus probatus Emerton, 1882: 52, pl. 15, f. 1 (mf; misidentified per Crosby & Bishop, 1928a: 54)

Erigone probata Keyserling, 1886b: 166, pl. 17, f. 228 (m; misidentified per Crosby & Bishop, 1928a: 54)

Tmeticus maculatus Banks, 1892a: 41, pl. 4, f. 23 (Df) Original description

Oedothorax maculatus Crosby, 1905a: 311, 335

Parerigone maculata Crosby, 1926: 4

Eperigone maculata Crosby & Bishop, 1928a: 54, f. 127-131 (mf)

Eperigone maculata Kaston, 1948: 194, f. 647-649, 664 (mf)

Eperigone maculata Millidge, 1987: 30, f. 106-111 (mf)

Eperigone maculata Paquin & Dupérré, 2003: 100, f. 939-941 (mf)

Mermessus maculatus Miller, 2007a: 123 (T from Eperigone)

Mermessus maderus (Millidge, 1987) | | USA urn:lsid:nmbe.ch:spidersp:010335

Eperigone madera Millidge, 1987: 30, f. 95-100 (Dmf) Original description

Mermessus maderus Miller, 2007a: 123 (T from Eperigone)

Mermessus major (Millidge, 1987) | | USA urn:lsid:nmbe.ch:spidersp:010336

Eperigone major Millidge, 1987: 30, f. 101-105 (Dmf) Original description

Mermessus major Miller, 2007a: 123 (T from Eperigone)

Mermessus mediocris (Millidge, 1987) | | Canada, USA urn:lsid:nmbe.ch:spidersp:010338

Eperigone mediocris Millidge, 1987: 23, f. 59-63 (Dmf) Original description

Mermessus mediocris Miller, 2007a: 123 (T from Eperigone)

Mermessus medius (Millidge, 1987) | | Mexico urn:lsid:nmbe.ch:spidersp:010337

Eperigone media Millidge, 1987: 52, f. 207-209 (Dm) Original description

Mermessus medius Miller, 2007a: 123 (T from Eperigone)

Mermessus merus (Millidge, 1987) | | Mexico urn:lsid:nmbe.ch:spidersp:010339

Eperigone mera Millidge, 1987: 60, f. 242-246 (Dmf) Original description

Mermessus merus Miller, 2007a: 123 (T from Eperigone)

Mermessus mniarus (Crosby & Bishop, 1928) | | USA urn:lsid:nmbe.ch:spidersp:010340

Eperigone mniara Crosby & Bishop, 1928a: 57, f. 132-135 (Dmf) Original description

Eperigone mniara Millidge, 1987: 35, f. 112-117 (mf)

Mermessus mniarus Miller, 2007a: 123 (T from Eperigone)

Mermessus modicus (Millidge, 1987) | | USA urn:lsid:nmbe.ch:spidersp:010341

Eperigone modica Millidge, 1987: 38, f. 139-140 (Df) Original description

Eperigone modica Edwards, 1993b: 258, f. 1-12 (f, Dm)

Mermessus modicus Miller, 2007a: 123 (T from Eperigone)

Mermessus montanus (Millidge, 1987) | | Mexico urn:lsid:nmbe.ch:spidersp:010342

Eperigone montana Millidge, 1987: 60, f. 247-251 (Dmf) Original description

Mermessus montanus Miller, 2007a: 123 (T from Eperigone)

Mermessus monticola (Millidge, 1987) | | Mexico urn:lsid:nmbe.ch:spidersp:010343

Eperigone monticola Millidge, 1987: 61, f. 252-256 (Dmf) Original description

Mermessus monticola Miller, 2007a: 123 (T from Eperigone)

Mermessus moratus (Millidge, 1987) | | Mexico urn:lsid:nmbe.ch:spidersp:010344

Eperigone morata Millidge, 1987: 48, f. 185-187 (Df) Original description

Mermessus naniwaensis (Oi, 1960) | | China, Korea, Japan urn:lsid:nmbe.ch:spidersp:010345

Erigonidium naniwaensis Oi, 1960a: 145, f. 26-30 (Dmf) Original description

Eperigone naniwaensis Oi, 1964: 23 (T from Erigonidium)

Erigonidium naniwaense Brignoli, 1983c: 337

Erigonidium naniwaense Chikuni, 1989b: 56, f. 47 (mf)

Eperigone naniwaensis Zhu & Sha, 1992: 43, f. 9-14 (mf)

Eperigone naniwaensis Song, Zhu & Chen, 1999: 167, f. 93F-G, J-K (mf)

Mermessus naniwaensis Ono, Matsuda & Saito, 2009: 290, f. 465-469 (mf)

Mermessus naniwaensis Kim, Lee & Yoo, 2016: 202, f. 2A-G (m)

Mermessus naniwaensis Ohchi, 2022a: 174, f. 9-10 (m)

Mermessus niger (Millidge, 1991) | | Colombia urn:lsid:nmbe.ch:spidersp:010346

Eperigone nigra Millidge, 1991: 141, f. 569-570 (Df) Original description

Mermessus obscurus (Millidge, 1991) | | Colombia urn:lsid:nmbe.ch:spidersp:010347

Eperigone obscura Millidge, 1991: 139, f. 564-568 (Dmf) Original description

Mermessus orbus (Millidge, 1987) | | Mexico urn:lsid:nmbe.ch:spidersp:010348

Eperigone orba Millidge, 1987: 69, f. 282-284 (Df) Original description

Mermessus ornatus (Millidge, 1987) | | Mexico urn:lsid:nmbe.ch:spidersp:010349

Eperigone ornata Millidge, 1987: 61, f. 260-264 (Dmf) Original description

Mermessus paludosus (Millidge, 1987) | | Canada urn:lsid:nmbe.ch:spidersp:010350

Eperigone paludosa Millidge, 1987: 24, f. 71-72 (Df) Original description

Mermessus paulus (Millidge, 1987) | | USA urn:lsid:nmbe.ch:spidersp:010351

Eperigone paula Millidge, 1987: 38, f. 137-138 (Df) Original description

Mermessus perplexus (Millidge, 1987) | | Mexico urn:lsid:nmbe.ch:spidersp:010352

Erigone eschatologica Crosby in Chamberlin, 1924b: 643, f. 86 (f; misidentified per Millidge, 1987: 44)

Eperigone eschatologica Crosby & Bishop, 1928a: 51, f. 115-116 (mf; misidentified per Millidge, 1987: 45)

Eperigone perplexa Millidge, 1987: 44, f. 169-173 (Dmf) Original description

Mermessus persimilis (Millidge, 1987) | | Mexico urn:lsid:nmbe.ch:spidersp:010353

Eperigone persimilis Millidge, 1987: 70, f. 291-294 (Df) Original description

Mermessus pinicola (Millidge, 1987) | | Mexico urn:lsid:nmbe.ch:spidersp:010354

Eperigone pinicola Millidge, 1987: 67, f. 273-275 (Dm) Original description

Mermessus probus (Millidge, 1987) | | Mexico urn:lsid:nmbe.ch:spidersp:010355

Eperigone proba Millidge, 1987: 56, f. 227-233 (Dmf) Original description

Mermessus proximus (Keyserling, 1886) | | Peru urn:lsid:nmbe.ch:spidersp:010492

Erigone proxima Keyserling, 1886b: 174, f. 234 (Df) Original description

Erigone proxima Roewer, 1955c: 1501 (nicht zu deuten = nomen dubium)

Mermessus proximus Miller, 2007a: 130, f. 92E-F (f, T from Erigone, removed from nomen dubium)

Mermessus rapidulus (Bishop & Crosby, 1938) | | Nicaragua, Costa Rica, Panama urn:lsid:nmbe.ch:spidersp:012640

Sinoria rapidula Bishop & Crosby, 1938: 73, pl. 4, f. 38-39 (Dm) Original description

Tmeticus auritus Fage, 1938a: 374, f. 4 (Df) [urn:lsid:nmbe.ch:spidersp:012935]

Mermessus rapidulus Miller, 2007a: 126, f. 92A-D, 95D, 96A-F, 97A-E, 102A (mf, T from Sinoria, S of Tmeticus auritus)

Mermessus singularis (Millidge, 1987) | | Mexico urn:lsid:nmbe.ch:spidersp:010357

Eperigone singularis Millidge, 1987: 67, f. 279-281 (Dm) Original description

Mermessus socius (Chamberlin, 1949) | | USA urn:lsid:nmbe.ch:spidersp:010358

Eperigone socius Chamberlin, 1949: 528, f. 159 (Df) Original description

Eperigone socia Brignoli, 1983c: 336

Eperigone socius Millidge, 1987: 35, f. 118-123 (Dm, f)

Mermessus sodalis (Millidge, 1987) | | USA urn:lsid:nmbe.ch:spidersp:010359

Eperigone sodalis Millidge, 1987: 24, f. 69-70 (Df) Original description

Mermessus solitus (Millidge, 1987) | | USA urn:lsid:nmbe.ch:spidersp:010361

Eperigone solita Millidge, 1987: 15, f. 25-28 (Df) Original description

Mermessus solus (Millidge, 1987) | | Mexico urn:lsid:nmbe.ch:spidersp:010360

Eperigone sola Millidge, 1987: 50, f. 191-193 (Df) Original description

Mermessus subantillanus (Millidge, 1987) | | Guadeloupe urn:lsid:nmbe.ch:spidersp:010362

Eperigone subantillana Millidge, 1987: 52, f. 202-206 (Dmf) Original description

Mermessus taibo (Chamberlin & Ivie, 1933) | | Canada, USA urn:lsid:nmbe.ch:spidersp:010363

Eperigone taibo Chamberlin & Ivie, 1933a: 12, pl. 3, f. 26-27, pl. 4, f. 28-31 (Dmf) Original description

Eperigone taibo Millidge, 1987: 26, f. 80-85 (mf)

Mermessus tenuipalpis (Emerton, 1911) | | Canada, USA urn:lsid:nmbe.ch:spidersp:010364

Tmeticus tenuipalpis Emerton, 1911: 395, pl. 3, f. 4 (Dmf) Original description

Erigone tenuipalpis Crosby & Bishop, 1928a: 41, f. 71-74 (mf)

Eperigone tenuipalpis Edwards, 1993a: 249, f. 1-12, 22-27 (mf, T from Erigone)

Mermessus tepejicanus (Gertsch & Davis, 1937) | | Mexico urn:lsid:nmbe.ch:spidersp:010365

Eperigone tepejicana Gertsch & Davis, 1937: 27, f. 36-38 (Dm) Original description

Eperigone tepejicana Millidge, 1987: 67, f. 285-287 (m)

Mermessus tibialis (Millidge, 1987) | | USA urn:lsid:nmbe.ch:spidersp:010366

Eperigone tibialis Millidge, 1987: 21, f. 49-52 (Dmf) Original description

Mermessus tlaxcalanus (Gertsch & Davis, 1937) | | Mexico urn:lsid:nmbe.ch:spidersp:010367

Eperigone tlaxcalana Gertsch & Davis, 1937: 25, f. 39-40 (Df) Original description

Eperigone tlaxcalana Millidge, 1987: 55, f. 219-226 (f, Dm)

Mermessus tridentatus (Emerton, 1882) | | Canada, USA, Puerto Rico urn:lsid:nmbe.ch:spidersp:010368

Tmeticus tridentatus Emerton, 1882: 53, pl. 15, f. 2 (Dmf) Original description

Gongylidium tridentatum Simon, 1884a: 500

Erigone tridentata Marx, 1890a: 536

Grammonota venusta Banks, 1892a: 34, pl. 5, f. 64 (Df) [urn:lsid:nmbe.ch:spidersp:064156]

Erigone clarcksvillense Petrunkevitch, 1925c: 172, pl. 8, f. 3-4 (Df) [urn:lsid:nmbe.ch:spidersp:064330]

Eperigone tridentata Crosby & Bishop, 1928a: 59, f. 139-142 (mf, S of Erigone clarcksvillensis)

Oreonetides portoricensis Petrunkevitch, 1930a: 218, f. 65-66 (Df) [urn:lsid:nmbe.ch:spidersp:064153]

Eperigone tridentata Bishop & Crosby, 1933: 393 (S of Grammonota venusta)

Eperigone tridentata Kaston, 1948: 194, f. 629-635 (mf)

Eperigone portoricensis Saaristo, 1972: 70 (T from Oreonetides)

Eperigone tridentata Millidge, 1980a: 99, f. 1-2 (m)

Eperigone tridentata van Helsdingen, 1981a: 232 (S of Eperigone portoricensis)

Eperigone tridentata Millidge, 1987: 21, f. 53-58 (mf)

Eperigone tridentata Edwards, 1993a: 256, f. 16-18, 28-30 (f)

Eperigone tridentata Paquin & Dupérré, 2003: 100, f. 942-946 (mf)

Mermessus trilobatus (Emerton, 1882) | | North America. Introduced to Azores, Europe urn:lsid:nmbe.ch:spidersp:010369

Tmeticus trilobatus Emerton, 1882: 53, pl. 15, f. 4 (Dmf) Original description

Gongylidium trilobatum Simon, 1884a: 500

Erigone trilobata Marx, 1890a: 536

Tmeticus moestus Banks, 1892a: 40, pl. 4, f. 19 (Dm) [urn:lsid:nmbe.ch:spidersp:064365]

Tmeticus palustris Banks, 1892a: 40, pl. 4, f. 21 (Dmf) [urn:lsid:nmbe.ch:spidersp:064366]

Tmeticus gnavus Banks, 1892a: 41, pl. 5, f. 44 (Dm) [urn:lsid:nmbe.ch:spidersp:064367]

Bathyphantes tristis Banks, 1892a: 46, pl. 2, f. 45 (Df) [urn:lsid:nmbe.ch:spidersp:064155]

Tmeticus debilis Banks, 1892a: 40, pl. 4, f. 20 (f; misidentified per Crosby, 1905a: 311)

Oedothorax trilobatus Crosby, 1905a: 313, 337 (S of Tmeticus moestus and T. palustris)

Tmeticus gnavus Banks, 1916: 75, pl. 10, f. 7 (m)

Bathyphantes tristis Banks, 1916: 77, pl. 11, f. 17 (f)

Parerigone trilobata Crosby, 1926: 4

Eperigone trilobata Crosby & Bishop, 1928a: 61, f. 143-146 (mf, S of Tmeticus gnavus)

Eperigone trilobata Kaston, 1948: 195, f. 641-646 (mf)

Eperigone trilobata Hackman, 1954: 20, f. 60-62 (f)

Eperigone trilobata Ivie, 1967: 127 (S of Bathyphantes tristis)

Eperigone trilobata van Helsdingen, 1982a: 393, f. 1-13 (mf)

Eperigone trilobata Millidge, 1987: 8, f. 1-8, 165, 167-168 (mf)

Eperigone trilobata Edwards, 1993a: 256, f. 19-21 (f)

Eperigone trilobata Paquin & Dupérré, 2003: 101, f. 947-950 (mf)

Mermessus trilobatus van Helsdingen & IJland, 2007: 27, f. 1-3 (mf)

Mermessus trilobatus Rozwałka, 2010b: 163, f. 1 (f)

Mermessus trilobatus Ibarra-Núñez, Maya-Morales & Chamé-Vázquez, 2011: 1186, f. 6h (m)

Mermessus trilobatus Oger & Picard, 2014: 2, f. 3(left), 4 (mf)

Mermessus trilobatus Šestáková et al., 2017: 20, f. 2a-b, 3a-d (mf)

Mermessus trilobatus Hirna, 2017: 41, f. 2 (m)

Mermessus trilobatus Biteniekytė, Valiulis & Skujienė, 2021: 115, f. 1A-C (m)

Mermessus trilobatus Sammet et al., 2023: 1034, f. 5A (m)

Mermessus undulatus (Emerton, 1914) | | Canada, USA urn:lsid:nmbe.ch:spidersp:010370

Gongylidium undulatus Emerton, 1914: 263, pl. 8, f. 4 (Dm) Original description

Parerigone undulata Crosby, 1926: 4

Eperigone contorta undulata Crosby & Bishop, 1928a: 49, f. 106 (m)

Oedothorax undulatus Crosby & Bishop, 1928b: 1050

Eperigone undulata Millidge, 1987: 11, f. 15-20 (mf, elevated from subspecies of Eperigone contorta)

Eperigone undulata Paquin & Dupérré, 2003: 101, f. 951-954 (mf)