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.
Gen. Sisicus Bishop & Crosby, 1938 urn:lsid:nmbe.ch:spidergen:01264
type Sisicus penifusifer Bishop & Crosby, 1938; gender masculine

In synonymy:

Sisicus longitarsi Chamberlin & Ivie, 1947 = Sisicus apertus (Holm, 1939) (Holm, 1950: 134)

Sisicus apertus (Holm, 1939) | | North America, Greenland, Alps, Central and Northern Europe, Russia (Europe to Far East) urn:lsid:nmbe.ch:spidersp:012665
Maro apertus Holm, 1939b: 25, f. 12a-c (Df) Original description
Sisicus apertus Holm, 1945b: 29, f. 7a-e (Dm, f, T from Maro)
Sisicus longitarsi Chamberlin & Ivie, 1947b: 49, f. 58, 84 (Dmf) [urn:lsid:nmbe.ch:spidersp:059888]
Sisicus apertus Vogelsanger, 1948: 38, f. 1 (f)
Sisicus apertus Holm, 1950: 134 (S of Sisicus longitarsi)
Sisicus apertus Thaler, 1969: 200, f. 5-6 (f)
Sisicus apertus Miller, 1971: 250, pl. L, f. 19-20 (mf)
Sisicus apertus Palmgren, 1975: 33, f. 18.12-14 (mf)
Sisicus apertus Millidge, 1977: 13, f. 40 (m)
Sisicus apertus Thaler, 1993: 646, f. 16-17 (m)
Sisicus apertus Hormiga, 2000: 53, f. 26A-F, pl. 61A-F, 77E-F (mf)
Sisicus apertus Paquin & Dupérré, 2003: 148, f. 1637-1638 (mf)
Sisicus apertus Marusik, 2015: 691, f. 14W-Y (mf)
Sisicus penifusifer Bishop & Crosby, 1938 | | Canada, USA urn:lsid:nmbe.ch:spidersp:012666 TYPE SPECIES
Sisicus penifusiferus Bishop & Crosby, 1938: 62, pl. 2, f. 12-13 (Dm) Original description
Sisicus penifusifer Paquin & Dupérré, 2003: 148, f. 1639-1640 (mf)
Sisicus penifusifer Dupérré, Paquin & Buckle, 2006: 152, f. 22-23 (Df)
Sisicus volutasilex Dupérré & Paquin, 2007 | | Canada urn:lsid:nmbe.ch:spidersp:041037
Sisicus volutasilex Dupérré & Paquin, 2007b: 9, f. 21-29 (Dmf) Original description

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