Isa
, Isala , Isaloides
Isc
, Ischalea , Ischnocolus
Ischnothele Ausserer, 1875
- Ischnothele annulata Tullgren, 1905
- Ischnothele caudata Ausserer, 1875
- Ischnothele digitata (O. Pickard-Cambridge, 1892)
- Ischnothele garcia Coyle, 1995
- Ischnothele goloboffi Coyle, 1995
- Ischnothele guianensis (Walckenaer, 1837)
- Ischnothele huambisa Coyle, 1995
- Ischnothele indicola Tikader, 1969
- Ischnothele jeremie Coyle, 1995
- Ischnothele longicauda Franganillo, 1930
- Ischnothele reggae Coyle & Meigs, 1990
- Ischnothele xera Coyle & Meigs, 1990
Arachnida → Araneae → Dipluridae , Ischnothyrella , Ischnothyreus
Ise
, Isela
Ish
, Ishania
Isi
Isicabu Griswold, 1987
- Isicabu henriki Griswold, 2001
- Isicabu kombo Griswold, 2001
- Isicabu margrethae Griswold, 2001
- Isicabu reavelli Griswold, 1987
- Isicabu zuluensis Griswold, 1987
Arachnida → Araneae → Cyatholipidae
Isigonia Simon, 1897
- Isigonia camacan Brescovit, 1991
- Isigonia limbata Simon, 1897
- Isigonia reducta (Chickering, 1940)
Arachnida → Araneae → Anyphaenidae
Isl
Islandiana Braendegaard, 1932
- Islandiana cavealis Ivie, 1965
- Islandiana coconino Ivie, 1965
- Islandiana cristata Eskov, 1987
- Islandiana falsifica (Keyserling, 1886) tipična
- Islandiana flaveola (Banks, 1892)
- Islandiana flavoides Ivie, 1965
- Islandiana holmi Ivie, 1965
- Islandiana lasalana (Chamberlin & Ivie, 1935)
- Islandiana longisetosa (Emerton, 1882)
- Islandiana mimbres Ivie, 1965
- Islandiana muma Ivie, 1965
- Islandiana princeps Braendegaard, 1932
- Islandiana speophila Ivie, 1965
- Islandiana unicornis Ivie, 1965
Arachnida → Araneae → Linyphiidae
Iso
, Isobactrus
Isoctenus Bertkau, 1880
- Isoctenus areia Polotow & Brescovit, 2009
- Isoctenus charada Polotow & Brescovit, 2009
- Isoctenus corymbus Polotow, Brescovit & Pellegatti-Franco, 2005
- Isoctenus coxalis (F. O. Pickard-Cambridge, 1902)
- Isoctenus eupalaestrus Mello-Leitão, 1936
- Isoctenus foliifer Bertkau, 1880
- Isoctenus griseolus (Mello-Leitão, 1936)
- Isoctenus herteli (Mello-Leitão, 1947)
- Isoctenus janeirus (Walckenaer, 1837)
- Isoctenus malabaris Polotow, Brescovit & Ott, 2007
- Isoctenus minusculus (Keyserling, 1891)
- Isoctenus ordinario Polotow & Brescovit, 2009
- Isoctenus segredo Polotow & Brescovit, 2009
- Isoctenus strandi Mello-Leitão, 1936
- Isoctenus taperae (Mello-Leitão, 1936)
Arachnida → Araneae → Ctenidae , Isopeda , Isopedella
Isoxya Simon, 1885
- Isoxya basilewskyi Benoit & Emerit, 1975
- Isoxya cicatricosa (C. L. Koch, 1844)
- Isoxya cowani (Butler, 1882)
- Isoxya mahafalensis Emerit, 1974
- Isoxya milloti Emerit, 1974
- Isoxya mossamedensis Benoit, 1962
- Isoxya mucronata (Walckenaer, 1841)
- Isoxya nigromutica (Caporiacco, 1939)
- Isoxya penizoides Simon, 1887
- Isoxya reuteri (Lenz, 1886)
- Isoxya semiflava Simon, 1887
- Isoxya somalica (Caporiacco, 1940)
- Isoxya stuhlmanni (Bösenberg & Lenz, 1895)
- Isoxya tabulata (Thorell, 1859)
- Isoxya testudinaria (Simon, 1901)
- Isoxya yatesi Emerit, 1973
Arachnida → Araneae → Araneidae
Isr
Israzorides Levy, 2003
- Israzorides judaeus Levy, 2003 [1]
Arachnida → Araneae → Miturgidae
Iss
Issaniella Grandjean, 1962
- Issaniella mograbin Grandjean, 1962 [2]
Arachnida → Sarcoptiformes → Oribatida → Hermannielloidea → Hermanniellidae