In synonymy:
Luphocemus Denis, 1960 = Ischnocolus Ausserer, 1871 (Korba et al., 2022: 870, by T of the type species, removed from S of Harpactirella, contra Benoit, 1965c: 297)
Transferred to other genera:
Ischnocolus culebrae Petrunkevitch, 1929 -- see Holothele
Ischnocolus decoratus Tikader, 1977 -- see Chilobrachys
Ischnocolus denticulatus Franganillo, 1930 -- see Holothele
Ischnocolus gracilis Ausserer, 1871 -- see Chaetopelma
Ischnocolus jerusalemensis Smith, 1990 -- see Chaetopelma
Ischnocolus khasiensis Tikader, 1977 -- see Chilobrachys
Ischnocolus shoemakeri Petrunkevitch, 1926 -- see Holothele
Ischnocolus syriacus Ausserer, 1871 -- see Chaetopelma
In synonymy:
Ischnocolus adenensis (Simon, 1890, T from Chaetopelma) = Ischnocolus jickelii L. Koch, 1875 (Guadanucci & Gallon, 2008: 42)
Ischnocolus africanus (Ausserer, 1875) = Ischnocolus elongatus Simon, 1873 (Simon, 1889f: 395, sub Leptopelma)
Ischnocolus algericus Thorell, 1875 = Ischnocolus valentinus Dufour, 1820 (Guadanucci & Wendt, 2014: 391)
Ischnocolus andalusiacus (Simon, 1873) = Ischnocolus valentinus Dufour, 1820 (Guadanucci & Wendt, 2014: 391)
Ischnocolus cavicola (Simon, 1889) = Ischnocolus valentinus Dufour, 1820 (Zonstein, 2018e: 114)
Ischnocolus fuscostriatus Simon, 1885 = Ischnocolus valentinus Dufour, 1820 (Guadanucci & Wendt, 2014: 391)
Ischnocolus hancocki Smith, 1990 = Ischnocolus elongatus Simon, 1873 (Korba et al., 2022: 870)
Ischnocolus holosericeus L. Koch, 1871 = Ischnocolus valentinus Dufour, 1820 (Guadanucci & Wendt, 2014: 391)
Ischnocolus insidiosus (Denis, 1960, T from Harpactirella) = Ischnocolus elongatus Simon, 1873 (Korba et al., 2022: 870)
Ischnocolus maroccanus (Simon, 1873) = Ischnocolus valentinus Dufour, 1820 (Guadanucci & Wendt, 2014: 391)
Ischnocolus numidus Simon, 1909 = Ischnocolus valentinus Dufour, 1820 (Guadanucci & Wendt, 2014: 391)
Ischnocolus triangulifer Ausserer, 1871 = Ischnocolus valentinus Dufour, 1820 (Guadanucci & Wendt, 2014: 391)
Ischnocolus tripolitanus Caporiacco, 1937 = Ischnocolus valentinus Dufour, 1820 (Guadanucci & Wendt, 2014: 391)
Nomina dubia:
Ischnocolus doleschalli Ausserer, 1871a: 189 (j, Brazil) -- Fukushima & Bertani, 2017: 127
Ischnocolus fasciculatus Strand, 1906b: 606 (f, Ethiopia) -- Guadanucci & Wendt, 2014: 399
Ischnocolus gracilis Keyserling, 1891: 11 (j, Brazil) -- Fukushima & Bertani, 2017: 123
Ischnocolus hirsutus Ausserer, 1875: 70 (j, Cuba) -- Fukushima & Bertani, 2017: 123
Ischnocolus tunetanus Pavesi, 1880b:362 (m, Tunisia, see also Strand, 1908h: 23, f) -- Guadanucci & Wendt, 2014: 399