Ora
Oramia Forster, 1964
- Oramia chathamensis (Simon, 1899)
- Oramia frequens (Rainbow, 1920)
- Oramia littoralis Forster & Wilton, 1973
- Oramia mackerrowi (Marples, 1959)
- Oramia marplesi Forster, 1964
- Oramia occidentalis (Marples, 1959)
- Oramia rubrioides (Hogg, 1909)
- Oramia solanderensis Forster & Wilton, 1973
Arachnida → Araneae → Agelenidae
Oramiella Forster & Wilton, 1973
- Oramiella wisei Forster & Wilton, 1973
Arachnida → Araneae → Agelenidae , Orangescirula
Orb
, Orbiculobates
Orc
, Orchestina , Orchestrella
Ord
Ordgarius Keyserling, 1886
- Ordgarius acanthonotus (Simon, 1909)
- Ordgarius bicolor Pocock, 1899
- Ordgarius clypeatus Simon, 1897
- Ordgarius ephippiatus Thorell, 1898
- Ordgarius furcatus (O. Pickard-Cambridge, 1877)
- Ordgarius furcatus distinctus (Rainbow, 1900)
- Ordgarius hexaspinus Saha & Raychaudhuri, 2004
- Ordgarius hobsoni (O. Pickard-Cambridge, 1877)
- Ordgarius magnificus (Rainbow, 1897)
- Ordgarius monstrosus Keyserling, 1886
- Ordgarius pustulosus Thorell, 1897
- Ordgarius sexspinosus (Thorell, 1894)
Arachnida → Araneae → Araneidae
Ore
Oreo Platnick, 2002
- Oreo bushbay Platnick, 2002
- Oreo capensis Platnick, 2002
- Oreo kidman Platnick, 2002
- Oreo muncoonie Platnick, 2002
- Oreo renmark Platnick, 2002 tipična
Arachnida → Araneae → Gallieniellidae
Oreocyba Holm, 1962
- Oreocyba elgonensis (Fage, 1936) tipična
- Oreocyba propinqua Holm, 1962
Arachnida → Araneae → Linyphiidae
Oreoneta Kulczyński, 1894
- Oreoneta alpina (Eskov, 1987)
- Oreoneta arctica (Holm, 1960)
- Oreoneta banffkluane Saaristo & Marusik, 2004
- Oreoneta beringiana Saaristo & Marusik, 2004
- Oreoneta brunnea (Emerton, 1882)
- Oreoneta eskimopoint Saaristo & Marusik, 2004
- Oreoneta eskovi Saaristo & Marusik, 2004
- Oreoneta fennica Saaristo & Marusik, 2004
- Oreoneta fortyukon Saaristo & Marusik, 2004
- Oreoneta frigida (Thorell, 1872) tipična
- Oreoneta garrina (Chamberlin, 1949)
- Oreoneta herschel Saaristo & Marusik, 2004
- Oreoneta intercepta (O. Pickard-Cambridge, 1873)
- Oreoneta kurile Saaristo & Marusik, 2004
- Oreoneta leviceps (L. Koch, 1879)
- Oreoneta logunovi Saaristo & Marusik, 2004
- Oreoneta magaputo Saaristo & Marusik, 2004
- Oreoneta mineevi Saaristo & Marusik, 2004
- Oreoneta mongolica (Wunderlich, 1995)
- Oreoneta montigena (L. Koch, 1872)
- Oreoneta punctata (Tullgren, 1955)
- Oreoneta repeater Saaristo & Marusik, 2004
- Oreoneta sepe Saaristo & Marusik, 2004
- Oreoneta sinuosa (Tullgren, 1955)
- Oreoneta tatrica (Kulczyński, 1915)
- Oreoneta tienshangensis Saaristo & Marusik, 2004
- Oreoneta tuva Saaristo & Marusik, 2004
- Oreoneta uralensis Saaristo & Marusik, 2004
- Oreoneta vogelae Saaristo & Marusik, 2004
- Oreoneta wyomingia Saaristo & Marusik, 2004
Arachnida → Araneae → Linyphiidae
Oreonetides Strand, 1901
- Oreonetides badzhalensis Eskov, 1991
- Oreonetides beattyi Paquin et al., 2009
- Oreonetides beringianus Eskov, 1991
- Oreonetides filicatus (Crosby, 1937)
- Oreonetides flavescens (Crosby, 1937)
- Oreonetides flavus (Emerton, 1915)
- Oreonetides glacialis (L. Koch, 1872)
- Oreonetides helsdingeni Eskov, 1984
- Oreonetides kolymensis Eskov, 1991
- Oreonetides longembolus Wunderlich & Li, 1995
- Oreonetides quadridentatus (Wunderlich, 1972)
- Oreonetides rectangulatus (Emerton, 1913)
- Oreonetides rotundus (Emerton, 1913)
- Oreonetides sajanensis Eskov, 1991
- Oreonetides shimizui (Yaginuma, 1972)
- Oreonetides taiwanus Tanasevitch, 2011
- Oreonetides vaginatus (Thorell, 1872) tipična
Arachnida → Araneae → Linyphiidae
Oreophantes Eskov, 1984
- Oreophantes recurvatus (Emerton, 1913)
Arachnida → Araneae → Linyphiidae
Orepukia Forster & Wilton, 1973
- Orepukia alta Forster & Wilton, 1973
- Orepukia catlinensis Forster & Wilton, 1973
- Orepukia dugdalei Forster & Wilton, 1973
- Orepukia egmontensis Forster & Wilton, 1973
- Orepukia florae Forster & Wilton, 1973
- Orepukia geophila Forster & Wilton, 1973
- Orepukia grisea Forster & Wilton, 1973
- Orepukia insula Forster & Wilton, 1973
- Orepukia nota Forster & Wilton, 1973
- Orepukia nummosa (Hogg, 1909)
- Orepukia orophila Forster & Wilton, 1973
- Orepukia pallida Forster & Wilton, 1973
- Orepukia poppelwelli Forster & Wilton, 1973
- Orepukia prina Forster & Wilton, 1973
- Orepukia rakiura Forster & Wilton, 1973
- Orepukia redacta Forster & Wilton, 1973
- Orepukia riparia Forster & Wilton, 1973
- Orepukia sabua Forster & Wilton, 1973
- Orepukia similis Forster & Wilton, 1973
- Orepukia simplex Forster & Wilton, 1973
- Orepukia sorenseni Forster & Wilton, 1973 tipična
- Orepukia tanea Forster & Wilton, 1973
- Orepukia tonga Forster & Wilton, 1973
- Orepukia virtuta Forster & Wilton, 1973
Arachnida → Araneae → Agelenidae
Orf
Orfeo Miller, 2007
- Orfeo desolatus (Keyserling, 1886)
- Orfeo jobim Miller, 2007 tipična
Animalia → Arthropoda → Arachnida → Araneae → Linyphiidae
Ori
, Oribatella , Oribatellidae , Oribatelloidea , Oribatodes , Oribatula , Oribatulidae , Oribella , Oribellidae , Oribellopsis , Oribotritia , Oribotritiidae , Orientopus , Orientzomus
Origanates Crosby & Bishop, 1933
- Origanates rostratus (Emerton, 1882)
Arachnida → Araneae → Linyphiidae , Origes
Orinocosa Chamberlin, 1916
- Orinocosa aymara Chamberlin, 1916 tipična
- Orinocosa celerierae Cornic, 1976
- Orinocosa guentheri (Pocock, 1899)
- Orinocosa hansi (Strand, 1916)
- Orinocosa paraguensis (Gertsch & Wallace, 1937)
- Orinocosa priesneri Roewer, 1959
- Orinocosa pulchra Caporiacco, 1947
- Orinocosa securifer (Tullgren, 1905)
- Orinocosa stirlingae (Hogg, 1905)
- Orinocosa tropica Roewer, 1959
Arachnida → Araneae → Lycosidae , Orinomana , Oripoda , Oripodidae , Oripodoidea , Orissania
Orn
, Ornithoctonus
Ornithodoros Koch, 1844
- Ornithodoros alactagalis Issaakjan, 1936
- Ornithodoros antiquus Poinar, 1995
- Ornithodoros apertus Walton, 1962
- Ornithodoros arenicolous Hoogstraal, 1953
- Ornithodoros asperus Warburton, 1918
- Ornithodoros brasiliensis Aragão, 1923
- Ornithodoros cholodkovskyi Pavlovsky, 1930
- Ornithodoros compactus Walton, 1962
- Ornithodoros coriaceus Koch, 1844
- Ornithodoros eremicus Cooley & Kohls, 1941
- Ornithodoros furcosus Neumann, 1908
- Ornithodoros graingeri Heisch & Guggisberg, 1953
- Ornithodoros grenieri Klein, 1965
- Ornithodoros gurneyi Warburton 1926
- Ornithodoros hermsi Wheeler, Herms & Meyer, 1935
- Ornithodoros indica Rau & Rao, 1971
- Ornithodoros knoxjonesi Jones & Clifford, 1972
- Ornithodoros macmillani Hoogstraal & Kohls, 1966
- Ornithodoros marocanus Velu, 1919
- Ornithodoros moubata Murray, 1877
- Ornithodoros nattereri Warburton, 1927
- Ornithodoros nicollei Mooser, 1932
- Ornithodoros normandi Larrousse, 1923
- Ornithodoros parkeri Cooley, 1936
- Ornithodoros porcinus
- Ornithodoros procaviae Theodor & Costa, 1960
- Ornithodoros rostratus Aragão, 1911
- Ornithodoros savignyi Audouin, 1827
- Ornithodoros sonrai Sautet & Witkowski, 1943
- Ornithodoros steini Schulze, 1935
- Ornithodoros tartakovskyi Olenev, 1931
- Ornithodoros tholozani Laboulbène & Mégnin, 1882
- Ornithodoros transversus Banks, 1902
- Ornithodoros turicata Dugès, 1876
- Ornithodoros zumpti Heisch & Guggisberg, 1953
Arachnida → Ixodida → Argasidae , Ornithonyssus , Ornithonysus
Oro
Orodrassus Chamberlin, 1922
- Orodrassus assimilis (Banks, 1895)
- Orodrassus canadensis Platnick & Shadab, 1975
- Orodrassus coloradensis (Emerton, 1877)
Arachnida → Araneae → Gnaphosidae , Oromurcia , Orongia
Orp
, Orphnaecus
Ors
, Orsima , Orsinome , Orsolobidae , Orsolobus
Orsonwelles Hormiga, 2002
- Orsonwelles ambersonorum Hormiga, 2002
- Orsonwelles arcanus Hormiga, 2002
- Orsonwelles bellum Hormiga, 2002
- Orsonwelles calx Hormiga, 2002
- Orsonwelles falstaffius Hormiga, 2002
- Orsonwelles graphicus (Simon, 1900)
- Orsonwelles iudicium Hormiga, 2002
- Orsonwelles macbeth Hormiga, 2002
- Orsonwelles malus Hormiga, 2002
- Orsonwelles othello Hormiga, 2002
- Orsonwelles polites Hormiga, 2002 tipična
- Orsonwelles torosus (Simon, 1900)
- Orsonwelles ventus Hormiga, 2002
Arachnida → Araneae → Linyphiidae
Orstom Raven, 1994
- Orstom aoupinie Raven, 1994
- Orstom chazeaui Raven & Churchill, 1994 tipična
- Orstom hydratemei Raven & Churchill, 1994
- Orstom macmillani Raven, 1994
- Orstom tropicus Raven, 1994
- Orstom undecimatus Raven, 1994
Arachnida → Araneae → Barychelidae
Ort
, Orthobula
Orthocosa Roewer, 1960
- Orthocosa ambigua (Denis, 1947)
- Orthocosa orophila (Thorell, 1887)
- Orthocosa semicincta (L. Koch, 1877)
- Orthocosa sternomaculata (Mello-Leitão, 1943)
- Orthocosa tokunagai (Saito, 1936)
Arachnida → Araneae → Lycosidae , Orthogalumna
Orthonops Chamberlin, 1924
- Orthonops gertschi Chamberlin, 1928
- Orthonops giulianii Platnick, 1995
- Orthonops icenoglei Platnick, 1995
- Orthonops iviei Platnick, 1995
- Orthonops johnsoni Platnick, 1995
- Orthonops lapanus Gertsch & Mulaik, 1940
- Orthonops ovalis (Banks, 1898)
- Orthonops overtus Chamberlin, 1924
- Orthonops zebra Platnick, 1995
Arachnida → Araneae → Caponiidae
Infrared Orthosterni Pocock, 1911
- Bothriuroidea Simon, 1880 [1]
- Buthoidea C. L. Koch, 1837 [1]
- †Centromachoidea Petrunkevitch, 1953 [1]
- Chactoidea Pocock, 1893 [1]
- Chaeriloidea Pocock, 1893 [1]
- Scorpionoidea Latreille, 1802 [1]
- Vaejovoidea Thorell, 1876 [1]
Arachnida → Neoscorpionina → Scorpiones , Orthozetes , Orthrus
Oru
Orumcekia Koçak & Kemal, 2008
- Orumcekia gemata (Wang, 1994)
- Orumcekia jianhuii (Tang & Yin, 2002)
- Orumcekia lanna (Dankittipakul, Sonthichai & Wang, 2006)
- Orumcekia libo (Wang, 2003)
- Orumcekia mangshan (Zhang & Yin, 2001)
- Orumcekia pseudogemata (Xu & Li, 2007)
- Orumcekia satoi (Nishikawa, 2003)
- Orumcekia sigillata (Wang, 1994)
- Orumcekia subsigillata (Wang, 2003)
Arachnida → Araneae → Agelenidae
Orv
, Orvilleus
Ory
Oryphantes Hull, 1932
- Oryphantes aliquantulus Dupérré & Paquin, 2007
- Oryphantes angulatus (O. Pickard-Cambridge, 1881) tipična
- Oryphantes bipilis (Kulczyński, 1885)
- Oryphantes cognatus (Tanasevitch, 1992)
- Oryphantes geminus (Tanasevitch, 1982)