Family: Linyphiidae Blackwall,1859 [urn:lsid:nmbe.ch:spiderfam:0103] Detail
Gen. Ipa Saaristo, 2007 [urn:lsid:nmbe.ch:spidergen:03799] Detail
I. Saaristo, 2007b: 38, type Lepthyphantes keyserlingi (Ausserer, 1867); N.B.: although Saaristo indicated that the gender is feminine, he treated all the names as masculine and that was presumably his intention.
In synonymy:
Ipa pirini (Drensky, 1921, removed from S of I. keyserlingi) = Ipa terrenus (L. Koch, 1879) (Deltshev, 1988a: 52, sub Lepthyphantes quadrimaculatus, contra Wunderlich, 1980e: 321).
Ipa quadrimaculatus (Kulczyński, 1898, T from Lepthyphantes) = Ipa terrenus (L. Koch, 1879) (Saaristo, 2007b: 40).
Ipa keyserlingi (Ausserer, 1867) * | m f | Europe, Caucasus     [urn:lsid:nmbe.ch:spidersp:011198]
Linyphia keyserlingi Ausserer, 1867: 160, pl. 7, f. 1-4 (Dmf).
Linyphia guttata Thorell, 1875b: 61 (Df).
Linyphia guttata Thorell, 1875c: 31 (Df).
Bathyphantes keyserlingi Förster & Bertkau, 1883: 273.
Microneta keyserlingi Simon, 1884a: 423, f. 199-201 (mf).
Lephthyphantes keyserlingi Chyzer & Kulczyński, 1894: 71, pl. 3, f. 8 (mf).
Lepthyphantes keyserlingi Bösenberg, 1901: 76, pl. 6, f. 81 (mf).
Lepthyphantes keyserlingi Wiehle, 1956: 210, f. 350-351 (mf).
Lepthyphantes keyserlingi Miller, 1971: 226, pl. XLIV, f. 18-19 (mf).
Lepthyphantes keyserlingi Palmgren, 1975: 62, f. 10.17-19 (mf).
Lepthyphantes keyserlingi Miller & Zitnanská, 1976a: 85, pl. IV, f. 5-7 (mf).
Lepthyphantes keyserlingi Wunderlich, 1980e: 321 (S, rejected).
Lepthyphantes keyserlingi Tanasevitch, 1990: 28, f. 11.3-6 (mf).
Lepthyphantes keyserlingi Heimer & Nentwig, 1991: 188, f. 507 (mf).
Lepthyphantes keyserlingi Kronestedt, 1993d: 147, f. 1, 3-4 (f).
Ipa keyserlingi Saaristo, 2007b: 39, f. 3-4, 7-8, 11-12, 14-16 (Tmf from Lepthyphantes).
Ipa keyserlingi Oger & Van Keer, 2017: 19, f. 7A-B (m).
Ipa pepticus (Tanasevitch, 1988) | m f | Kazakhstan, Turkmenistan, Mongolia     [urn:lsid:nmbe.ch:spidersp:011274]
Lepthyphantes pepticus Tanasevitch, 1988b: 193, f. 33-35 (Dm).
Lepthyphantes pepticus Wunderlich, 1995e: 488, f. 37-38 (m).
Ipa pepticus Saaristo, 2007b: 39, f. 28-29 (m, Df).
Ipa spasskyi (Tanasevitch, 1986) | m f | Turkey to Central Asia     [urn:lsid:nmbe.ch:spidersp:011307]
Lepthyphantes spasskyi Tanasevitch, 1986: 140, f. 9-16 (Dmf).
Ipa spasskyi Saaristo, 2007b: 40, f. 26-27 (mf).
Ipa terrenus (L. Koch, 1879) | m f | France, Czech Rep., Slovakia, Eastern Europe to Central Asia     [urn:lsid:nmbe.ch:spidersp:041363]
Linyphia terrena L. Koch, 1879c: 31, pl. 1, f. 19 (Df).
Lepthyphantes quadrimaculatus Kulczyński, 1898: 90, pl. 2, f. 63-64 (Dm) [urn:lsid:nmbe.ch:spidersp:011281].
Lepthyphantes pirini Drensky, 1921: 13, 76, pl. 1. f. 1-4 (Df).
Lepthyphantes terrenus Holm, 1973: 95, f. 76-77 (Tf from Linyphia).
Lepthyphantes quadrimaculatus Miller & Zitnanská, 1976a: 85, pl. IV, f. 1-4 (removed m from S of L. keyserlingi, Df).
Lepthyphantes quadrimaculatus Deltshev, 1988a: 52, f. 1 (f, S).
Lepthyphantes quadrimaculatus Tanasevitch, 1990: 28, f. 11.1-2 (m).
Lepthyphantes quadrimaculatus Heimer & Nentwig, 1991: 188, f. 508 (mf).
Lepthyphantes quadrimaculatus Esyunin, Efimik & Polyanin, 1995: 60, f. 30-32 (mf).
Ipa terrenus Saaristo, 2007b: 40, f. 24-25 (Tf from Lepthyphantes, where it had been regarded as a nomen dubium by Tanasevitch & Eskov, 1987: 197, Sm).
Ipa terrenus Oger & Van Keer, 2017: 19, f. 6A-B (m).
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