Checklist for Class Arachnida Lamarck, 1801 (Arachnids)
and region Alameda County (California, USA)
List of families for Alameda County
68 Families width 151 Species and 2 Subspecies #EALTCBMSDGPOVIHNUZ
| Eriophyidae Nalepa, 1898 | Blister mites | 3 | Species | Taxom | | Araneidae (Simon, 1895) | Golden orb web spiders | 16 | Species | Taxom | | Antrodiaetidae (Gertsch, 1940) | Folding trapdoor spider | 3 | Species | Taxom | | Alloptidae Gaud, 1957 | | 1 | Species | Taxom | | Lycosidae (Lehtinen & H..., 1979) | Ground Spiders | 3 | Species | Taxom | | Amaurobiidae Thorell, 1870 | Amaurobiids | 2 | Species | Taxom | | Amblyommidae Banks, 1907 | | 2 | Species | Taxom | | Tetranychidae Donnadieu, 1875 | Spider mites | 13 | Species | Taxom | | Corinnidae Karsch, 1880 | Ant-like Sac Spiders | 2 | Species | Taxom | | Theridiidae Sundevall, 1833 | Cobweb And Widow Spiders | 10 | Species | Taxom | | Thomisidae Sundevall, 1833 | Crab Spider | 7 | Species | Taxom | | Ereynetidae Schrank, 1776 | | 3 | Species | Taxom | | Tenuipalpidae Berlese, 1913 | False spider mites | 7 | Species | Taxom | | Carabodidae Koch, 1837 | | 1 | Species | Taxom | | Buthidae C. L. Koch, 1837 | Arrowbreasted scorpions | 2 | Species | Taxom | | Cercomegistidae Trägårdh, 1937 | | 1 | Species | Taxom | | Cheyletidae Leach, 1815 | | 1 | Species | Taxom | | Cheliferidae Risso, 1826 | | 1 | Species | Taxom | | Macronyssidae Oudemans, 1936 | Macronyssid Mites | 0 | Species | Taxom | | Schizogyniidae Trägårdh, 1950 | | 1 | Species | Taxom | | Laelapidae Berlese, 1892 | | 3 | Species | Taxom | | Cybaeidae Banks, 1892 | Pond Water Spiders | 1 | Species | Taxom | | Digamasellidae Evans, 1957 | | 0 | Species | Taxom | | Gnaphosidae (Pocock, 1898) | Flat-bellied ground spiders | 12 | Species | Taxom | | Dysderidae C. L. Koch, 1837 | Dysderid spiders | 3 | Species | Taxom | | Salticidae Blackwall, 1842 | Jumping Spider | 9 | Species | Taxom | | Myobiidae Megnin, 1877 | | 0 | Species | Taxom | | Spinturnicidae Oudemans, 1902 | | 1 | Species | Taxom | | Phytoseiidae Berlese, 1916 | Phytoseiid mites | 2 | Species | Taxom | | Ologamasidae Ryke, 1962 | | 0 | Species | Taxom | | Veigaiidae Oudemans, 1939 | | 1 | Species | Taxom | | Anapidae Simon, 1895 | Anapid spiders | 1 | Species | Taxom | | Sclerosomatidae Simon, 1879 | Sclerosomatid Harvestmen | 2 | Species | Taxom | | Ixodidae C. L. Koch, 1844 | Hard Tick | 3 | Species | Taxom | | Leeuwenhoekiidae Womersley, 1944 | Chigger mites | 0 | Species | Taxom | | Taracidae Schönhofer, 2013 | | 0 | Species | Taxom | | Sparassidae (Bertkau, 1872) | Giant crab spiders | 1 | Species | Taxom | | Histiostomatidae Berlese, 1897 | | 1 | Species | Taxom | | Pholcidae (C. L. Koch, 1851) | Carpenter spider | 2 | Species | Taxom | | Agelenidae C. L. Koch, 1837 | Agelenid Spiders | 1 | Species | Taxom | | Iolinidae Pritchard, 1956 | | 1 | Species | Taxom | | Stigmaeidae (Wood, 1967) | | 0 | Species | Taxom | | Linyphiidae Blackwall, 1859 | Dwarf spiders | 5 | Species | Taxom | | Macrochelidae Vitzthum, 1930 | | 2 | Species | Taxom | | Neobisiidae Chamberlin, 1930 | | 1 | Species | Taxom | | Caligonellidae Grandjean, 1944 | | 1 | Species | Taxom | | Oecobiidae (Blackwall, 1862) | Disc web spider | 1 | Species | Taxom | | Pachylaelapidae Berlese, 1913 | | 1 | Species | Taxom | | Oxyopidae Thorell, 1870 | Lynx spiders | 1 | Species | Taxom | | Parasitidae Oudemans, 1901 | Beetle Mites | 1 | Species | Taxom | | Phalangiidae Latreille, 1802 | Daddy-Long-Legs | 1 | Species | Taxom | | Philodromidae Thorell, 1870 | False crab spiders | 2 | Species | Taxom | | Pimoidae Wunderlich, 1986 | Pimoid spiders | 0 | Species | Taxom | | Tanaupodidae Thor, 1935 | | 1 | Species | Taxom | | Melicharidae Hirschmann, 1962 | | 0 | Species | Taxom | | Diptilomiopidae Boczek, 1964 | | 0 | Species | Taxom | | Segestriidae Simon, 1893 | Six-eyed Spiders | 0 | Species | Taxom | | Tarsonemidae Kramer, 1877 | Tarsonemid mites | 2 | Species | Taxom | | Tetragnathidae Menge, 1866 | Elongated Orb Weavers | 3 | Species | Taxom | | Phytoptidae Manson, 1970 | | 1 | Species | Taxom | | Mysmenidae Petrunkevitch, 1928 | Dwarf cobweb spiders | 1 | Species | Taxom | | Trombidiidae Leach, 1815 | Beer Bahuti | 0 | Species | Taxom | | Urodinychidae Berlese, 1917 | | 1 | Species | Taxom | | Bothriuridae Simon, 1880 | | 1 | Species | Taxom | | Uropodidae Kramer, 1881 | | 1 | Species | Taxom | | Vaejovidae Thorell, 1876 | | 0 | Species | Taxom | | Zerconidae Berlese, 1892 | | 0 | Species | Taxom | | Zoropsidae Bertkau, 1882 | False Huntsman Spiders | 1 | Species | Taxom |
Genera for Alameda County
137 Genera with 151 Species #ABCDEGHIJLMNOPRSTUVXZ
| Acalitus Keifer, 1928 | | 1 | Species | Taxom | Aceria Keifer, 1944 | | 0 | Species | Taxom | | Aculepeira Chamberlin &..., 1875 | | 2 | Species | Taxom | | Aculus Keifer, 1889 | | 1 | Species | Taxom | | Aliatypus Smith, 1896 | | 1 | Species | Taxom | | Alloptes Canestrini, 1976 | | 1 | Species | Taxom | | Alopecosa Simon, 1758 | Fox spiders | 1 | Species | Taxom | | Amaurobius Koch, 1947 | | 1 | Species | Taxom | Amblyomma hirtum. Neumann, 1906 | | 0 | Species | Taxom | | Antrodiaetus Ausserer, 1883 | Red Folding Door Trapdoor Spider | 1 | Species | Taxom | | Aplonobia Womersley, 1955 | | 1 | Species | Taxom | | Apochinomma Pavesi, 1896 | | 1 | Species | Taxom | | Araneus Clerck, 1847 | Angulate & roundshouldered orbweavers | 7 | Species | Taxom | | Argyrodes Simon, 1842 | Dewdrop spiders | 1 | Species | Taxom | | Atypoides Ausserer, 1968 | | 1 | Species | Taxom | | Bassaniana Strand, 1880 | Bark crab spiders | 1 | Species | Taxom | | Boydaia Womersley, 1948 | | 2 | Species | Taxom | | Brevipalpus Donnadieu, 1949 | | 5 | Species | Taxom | | Bryobia Koch, 1835 | | 1 | Species | Taxom | | Callobius Chamberlin, 1884 | Hacklemesh Weaver | 1 | Species | Taxom | | Carabodes Koch, 1914 | | 1 | Species | Taxom | | Centruroides Marx, 1863 | Bark scorpions | 2 | Species | Taxom | | Cercoleipus Kinn, 1970 | | 1 | Species | Taxom | Cheletomimus Oudemans, 1904 | | 0 | Species | Taxom | | Chelifer Geoffroy, 1758 | | 1 | Species | Taxom | Chiroptonyssus Auguston, 1945 | | 0 | Species | Taxom | | Choriarchus Kinn, 1966 | | 1 | Species | Taxom | Cosmolaelaps Berlese, 1903 | | 0 | Species | Taxom | | Cybaeus L. Koch, 1950 | | 1 | Species | Taxom | | Cyclosa Menge, 1887 | Three-lobed Spiders | 2 | Species | Taxom | Dendrolaelaps Halbert, 1915 | | 0 | Species | Taxom | | Dermacentor Koch, 1821 | Dog Ticks | 2 | Species | Taxom | | Dicrocheles Krantz & Khot, 1954 | | 1 | Species | Taxom | | Drassyllus Chamberlin, 1900 | | 1 | Species | Taxom | | Dysdera Latreille, 2001 | | 3 | Species | Taxom | Echinonyssus Hirst, 1925 | | 0 | Species | Taxom | | Enoplognatha Pavesi, 1758 | | 1 | Species | Taxom | Eotetranychus Oudemans, 1931 | | 0 | Species | Taxom | | Eriophyes Siebold, 1857 | | 1 | Species | Taxom | Eubrachylaelaps Ewing, 1929 | | 0 | Species | Taxom | | Evarcha Simon, 1998 | | 1 | Species | Taxom | Ewingana Radford, 1952 | | 0 | Species | Taxom | | Eyndhovenia Rudnick, 1857 | | 1 | Species | Taxom | | Galendromus Muma, 1951 | | 1 | Species | Taxom | Gamasiphis Berlese, 1904 | | 0 | Species | Taxom | Gamasolaelaps Berlese, 1904 | | 0 | Species | Taxom | | Gertschanapis Platnick & F..., 1960 | | 1 | Species | Taxom | | Globipes Banks, 1951 | | 1 | Species | Taxom | | Habronattus F. O. P.-Cam..., 1901 | Paradise Spiders | 1 | Species | Taxom | | Haemaphysalis Koch, 1869 | | 1 | Species | Taxom | | Haemogamasus Berlese, 1925 | | 1 | Species | Taxom | Hannemania Oudemans, 1911 | | 0 | Species | Taxom | | Haplodrassus Chamberlin, 1839 | | 1 | Species | Taxom | Hesperonemastoma Gruber, 1970 | | 0 | Species | Taxom | | Heteropoda Latreille, 1767 | | 1 | Species | Taxom | | Histiostoma Kramer, 1910 | | 1 | Species | Taxom | | Holocnemus Simon, 1763 | | 1 | Species | Taxom | | Hololena Chamberlin &..., 1929 | | 1 | Species | Taxom | | Homeopronematus H. M. André, 1944 | | 1 | Species | Taxom | | Hydranetes Kethley, 1971 | | 1 | Species | Taxom | | Ixodes Latreille, 1916 | | 2 | Species | Taxom | Julolaelaps Berlese, 1917 | | 0 | Species | Taxom | | Larinioides Caporiacco, 1758 | Furrow spiders | 1 | Species | Taxom | | Latrodectus Walckenaer, 1775 | Black widow spider | 1 | Species | Taxom | Ledermuelleria Oudemans, 1923 | | 0 | Species | Taxom | | Linyphantes Chamberlin &..., 1917 | | 2 | Species | Taxom | | Macrocheles Latreille, 1904 | | 2 | Species | Taxom | | Mecaphesa Simon, 1877 | | 4 | Species | Taxom | | Melychiopharis Simon, 1895 | | 1 | Species | Taxom | | Menemerus Simon, 1829 | | 1 | Species | Taxom | | Meriola Davie, 1886 | | 1 | Species | Taxom | | Metaseiulus Muma, 1957 | | 1 | Species | Taxom | | Metepeira F. O. P.-Cam..., 1941 | | 1 | Species | Taxom | | Micaria Westring, 1933 | | 4 | Species | Taxom | | Microcreagris Balzan, 1930 | | 1 | Species | Taxom | | Misumena Latreille, 1758 | Flower crab spiders | 1 | Species | Taxom | Misumenops F. O. P.-Cam..., 1900 | | 0 | Species | Taxom | | Molothrognathus Summers & Sc..., 1955 | | 1 | Species | Taxom | Myobia von Heyden, 1826 | | 0 | Species | Taxom | | Nelima Roewer, 1910 | | 1 | Species | Taxom | | Neon Simon, 1955 | | 1 | Species | Taxom | | Neoscona Simon, 1842 | Spotted orbweavers | 1 | Species | Taxom | | Neriene Blackwall, 1886 | | 1 | Species | Taxom | | Oecobius Lucas, 1870 | Wall spider | 1 | Species | Taxom | | Oligonychus Berlese, 1950 | | 4 | Species | Taxom | Ologamasus Berlese, 1888 | | 0 | Species | Taxom | | Olopachys Berlese, 1984 | | 1 | Species | Taxom | Onchodellus Berlese, 1904 | | 0 | Species | Taxom | | Oxyopes Latreille, 1845 | Lynx Spiders | 1 | Species | Taxom | | Panonychus Yokoyama, 1916 | | 1 | Species | Taxom | | Paraplonobia Wainstein, 1955 | | 1 | Species | Taxom | | Parasitus Latreille, 1758 | | 1 | Species | Taxom | | Pardosa C. L. Koch, 1919 | Thin-legged Wolf Spider | 1 | Species | Taxom | | Pelegrina Franganillo, 1892 | White-Cheeked Jumping Spiders | 1 | Species | Taxom | | Pentamerismus McGregor, 1877 | | 2 | Species | Taxom | | Phalangium Linnaeus, 1761 | | 1 | Species | Taxom | | Phidippus C. L. Koch, 1883 | | 1 | Species | Taxom | | Philodromus Walckenaer, 1884 | Running Crab Spider | 1 | Species | Taxom | | Pholcus Walckenaer, 1775 | | 1 | Species | Taxom | Pimoa Chamberlin &..., 1943 | | 0 | Species | Taxom | | Pirata Sundevall, 1757 | Pirate wolf spiders | 1 | Species | Taxom | | Poecilopachys Simon, 1833 | | 1 | Species | Taxom | | Polydiscia Methlagl, 2003 | | 1 | Species | Taxom | Proctolaelaps Berlese, 1923 | | 0 | Species | Taxom | | Prosocheyla Volgin, 1970 | | 1 | Species | Taxom | Protolophus Banks, 1893 | | 0 | Species | Taxom | Rhyncaphytoptus Keifer, 1939 | | 0 | Species | Taxom | | Salticus Latreille, 1757 | Zebra Spider | 1 | Species | Taxom | | Sassacus Peckham & Pe..., 1895 | | 1 | Species | Taxom | | Schizotetranychus Trägårdh, 1950 | | 1 | Species | Taxom | | Scotophaeus Simon, 1871 | | 1 | Species | Taxom | Segestria Latreille, 1804 | | 0 | Species | Taxom | | Spirembolus Chamberlin, 1935 | | 2 | Species | Taxom | | Steatoda Sundevall, 1802 | False black widows | 5 | Species | Taxom | | Stratiolaelaps Berlese, 1956 | | 1 | Species | Taxom | | Talavera Peckham & Pe..., 1895 | | 1 | Species | Taxom | | Tarsonemus Canestrini &..., 1912 | | 2 | Species | Taxom | | Tetragnatha Latreille, 1842 | Four-jawed spider | 3 | Species | Taxom | | Tetranychus Dufour, 1937 | | 3 | Species | Taxom | | Tetranycopsis Canestrini, 1876 | | 1 | Species | Taxom | | Thanatus C. L. Koch, 1870 | | 1 | Species | Taxom | | Theridion Walckenaer, 1924 | Tangle-Web Spiders | 1 | Species | Taxom | Trachelas L. Koch, 1872 | Running Spider | 0 | Species | Taxom | | Trachyzelotes Lohmander, 1826 | | 2 | Species | Taxom | | Trisetacus Keifer, 1910 | | 1 | Species | Taxom | | Trogloneta Simon, 1960 | | 1 | Species | Taxom | Trombidium Fabricius, 1775 | Velvet mite | 0 | Species | Taxom | | Uroobovella Berlese, 1926 | | 1 | Species | Taxom | | Urophonius Pocock, 1876 | | 1 | Species | Taxom | | Uropoda Latreille, 1885 | | 1 | Species | Taxom | Vaejovis Koch, 1836 | | 0 | Species | Taxom | | Veigaia Oudemans, 1892 | | 1 | Species | Taxom | | Xysticus Koch, 1887 | Ground Crab Spider | 1 | Species | Taxom | | Zelotes Gistel, 1866 | | 3 | Species | Taxom | Zercon C.L.Koch, 1836 | | 0 | Species | Taxom | | Zoropsis Simon, 1820 | | 1 | Species | Taxom | | Zygiella F. O. P.-Cam..., 1757 | | 1 | Species | Taxom |
Species list for Alameda County
151 Species and 2 Subspecies | Acalitus essigi Hassan, 1928 | Blackberry mite | | Aculepeira carbonaria L. Koch, 1869 | | | Aculepeira packardi Thorell, 1875 | | | Aculus tetanothrix Nalepa, 1889 | Willow Bead Gall Mite | | Aliatypus californicus Banks, 1896 | | | Alloptes (Sternalloptes) cyrtolobus Gaud, 1976 | | | Alopecosa aculeata Clerck, 1758 | | | Amaurobius mathetes Ralph Vary C..., 1947 | Chuckwalla Spring desertsnail | | Antrodiaetus riversi O. P.-Cambridge, 1883 | Turret spider | | Aplonobia anisa Pritchard & ..., 1955 | | | Apochinomma formica Eugène Simon, 1896 | | | Araneus angulatus Clerck, 1758 | Colletid bees | | Araneus balanus Doleschall, 1859 | | | Araneus diadematus Clerck, 1758 | Cross orbweaver | | Araneus marmoreus Clerck, 1757 | Marbled Orb Weaver | | Araneus montereyensis Archer, 1951 | | | Araneus pegnia Walckenaer, 1842 | Orb weavers | | Araneus thaddeus (Hentz, 1847) | ⇒ Araneus meropes Keyserling, 1865 | | Argyrodes argyrodes (Walckenaer, 1842) | ⇒ Neospintharus trigonum Nicholas Mar..., 1850 | | Atypoides gertschi (Coyle, 1968) | ⇒ Antrodiaetus gertschi Coyle, 1968 | | Bassaniana versicolor Eugen von Ke..., 1880 | Bark Crab Spider | | Boydaia (Boydaia) hirundoae Fain, 1956 | | | Boydaia (Boydaia) sturni Boyd, 1948 | | | Brevipalpus californicus Banks, 1904 | Bunch mite | | Brevipalpus mori De Leon, 1960 | | | Brevipalpus obovatus Donnadieu, 1875 | Privet false spider mite | | Brevipalpus oncidii Baker, 1949 | | | Brevipalpus pini Baker, 1949 | | | Bryobia (Bryobia) praetiosa (C. L. Koch, 1835) | ⇒ Bryobia macrotibialis Mathys, 1962 | | Callobius severus Eugène Simon, 1884 | | | Carabodes scymnus Hull, 1914 | | | Centruroides sculpturatus (Wood, 1863) | ⇒ Centruroides exilicauda Wood, 1863 | | Centruroides vittatus Say, 1863 | Bark scorpion | | Cercoleipus coelonotus ♰ Kinn, 1970 | | | Chelifer cancroides Linnaeus, 1758 | Book pseudoscorpion | | Choriarchus reginus Kinn, 1966 | | | Cybaeus grizzlyi Ehrenfried S..., 1950 | | | Cyclosa conica Pallas, 1772 | Conical Trashline Orbweaver | | Cyclosa psylla Thorell, 1887 | | | Dermacentor occidentalis Marx, 1892 | Net tick | | Dermacentor variabilis Say, 1821 | American dog tick | | Dicrocheles phalaenodectes Treat, 1954 | | | Drassyllus insularis Banks, 1900 | | | Dysdera crocata (Koch, 1838) | ⇒ Dysdera maurusia Tord Tamerla..., 1873 | | Dysdera nomada Eugène Simon, 1910 | Stocky cerith | | Dysdera pristiphora Carlo Pesarini, 2001 | | | Enoplognatha ovata (Clerck, 1758) | ⇒ Enoplognatha latimana Hippa & Oksala, 1982 | | Eriophyes tiliae Pagenstecher, 1857 | Bugle gall | | Evarcha proszynskii Marusik & Lo..., 1998 | | | Eyndhovenia caligus Kolenati, 1857 | | | Galendromus (Galendromus) occidentalis Nesbitt, 1951 | Western predatory mite | | Gertschanapis shantzi Gertsch, 1960 | | | Globipes simplex Schenkel, 1951 | | | Habronattus klauseri Peckham & Pe..., 1901 | | | Haemaphysalis leporispalustris Packard, 1869 | Grouse tick | | Haemogamasus liponyssoides Ewing, 1925 | | | Haplodrassus signifer (C. L. Koch, 1839) | ⇒ Haplodrassus pugnans Simon, 1880 | | Heteropoda venatoria (Linnaeus, 1767) | ⇒ Heteropoda simplex Jäger & Ono, 2000 | | Histiostoma tarsalis Banks, 1910 | | | Holocnemus pluchei Scopoli, 1763 | Daddy long-legs spider | | Hololena adnexa Ralph Vary C..., 1929 | | | Homeopronematus anconai Baker, 1943 ..., 1944 | | | Hydranetes tropisternus Kethley, 1971 | | | Ixodes pacificus Cooley & Kohls, 1943 | California black-legged tick | | Ixodes spinipalpis Hadwen & Nut..., 1916 | Mouse tick | | Larinioides cornutus Clerck, 1758 | Furrow orb spider | | Latrodectus mactans (Fabricius, 1775) | ⇒ Latrodectus tredecimguttatus Rossi, 1790 | | Linyphantes anacortes Ralph Vary C..., 1942 | | | Linyphantes orcinus James Henry ..., 1917 | | | Macrocheles (Macrocheles) muscaedomesticae Scopoli, 1772 | House fly mite | | Macrocheles (Macrocheles) robustulus Berlese, 1904 | Mite | | Mecaphesa californica Richard C. B..., 1896 | | | Mecaphesa coloradensis Willis J. Ge..., 1933 | | | Mecaphesa importuna Eugen von Ke..., 1881 | | | Mecaphesa lepida Tord Tamerla..., 1877 | | | Melychiopharis cynips Eugène Simon, 1895 | | | Menemerus semilimbatus Hahn, 1829 | Jumping spider | | Meriola arcifera Eugène Simon, 1886 | Ant mimic spider | | Metaseiulus (Metaseiulus) arboreus Chant, 1957 | | | Metepeira grandiosa Ralph Vary C..., 1941 | | | Micaria constricta (Emerton, 1894) | ⇒ Micaria formicaria Sundevall, 1831 | | Micaria idana Norman I. Pl..., 1988 | | | Micaria rossica Tord Tamerla..., 1875 | | | Micaria utahna Willis John ..., 1933 | Eligulate lycopods | | Microcreagris laurae Chamberlin, 1930 | Argus desertsnail | | Misumena vatia Clerck, 1758 | Crab Spider | | Molothrognathus fulgidus Summers & Sc..., 1955 | | | Nelima paessleri Roewer, 1910 | Egg milkvetch | | Neon ellamae Gertsch & Ivie, 1955 | | | Neoscona arabesca Walckenaer, 1842 | Arabesque orbweaver | | Neriene digna Eugen von Ke..., 1886 | | | Oecobius maculatus (Simon, 1870) | ⇒ Oecobius navus Blackwall, 1859 | | Oligonychus (Oligonychus) ilicis McGregor, 1917 | Coffee red mite | | Oligonychus (Oligonychus) milleri McGregor, 1950 | Pine spider mite | | Oligonychus (Wainsteiniella) subnudus McGregor, 1950 | | | Oligonychus platani McGregor, 1950 | | | Olopachys copris Ishikawa, 1984 | | | Oxyopes scalaris Nicholas Mar..., 1845 | Western lynx spider | | Panonychus (Panonychus) citri McGregor, 1916 | Citrus red mite | | Paraplonobia acharis Pritchard & ..., 1955 | Northern kelp crab | | Parasitus (Parasitus) coleoptratorum Linnaeus, 1758 | | | Pardosa utahensis Ralph Vary C..., 1919 | | | Pelegrina aeneola Curtis, 1892 | Cottonwood borer | | Pentamerismus erythreus Ewing, 1917 | | | Pentamerismus taxi Haller, 1877 | Yew false spider mite | | Phalangium opilio Linnaeus, 1761 | Brown daddy-long-legs | | Phidippus johnsoni Peckham & Pe..., 1883 | Johnson jumper | | Philodromus californicus Keyserling, 1884 | Guinea ant | | Pholcus phalangioides (Fuesslin, 1775) | ⇒ Smeringopus pallidus Blackwall, 1858 | | Pirata piraticus (Clerck, 1757) | ⇒ Trebacosa marxi Witmer Stone, 1890 | | Poecilopachys australasia Griffith & P..., 1833 | Two-spined Spider | | Polydiscia deuterosminthurus Baquero, Mor..., 2003 | | | Prosocheyla oaklandia Summers & Price, 1970 | | | Salticus scenicus (Clerck, 1757) | ⇒ Salticus cingulatus Panzer, 1797 | | Sassacus papenhoei Peckham & Pe..., 1895 | | | Schizotetranychus elymus McGregor, 1950 | | | Scotophaeus blackwalli (Thorell, 1871) | ⇒ Scotophaeus peninsularis Carl Friedri..., 1928 | | Spirembolus falcatus Millidge, 1980 | | | Spirembolus phylax Ralph Vary C..., 1935 | | | Steatoda bipunctata Linnaeus, 1758 | False widow | | Steatoda grandis (Richard C. B..., 1901) | ⇒ Steatoda mexicana Herbert Walt..., 1957 | | Steatoda grossa C. L. Koch, 1838 | Brown house spider | | Steatoda nobilis Tord Tamerla..., 1875 | Cobweb weaver | | Steatoda triangulosa Walckenaer, 1802 | Triangulate bud spider | | Stratiolaelaps scimitus Womersley, 1956 | Mite | | Talavera minuta Richard C. B..., 1895 | | | Tarsonemus (Tarsonemus) apis Rennie, 1921 | | | Tarsonemus (Tarsonemus) waitei Banks, 1912 | Mite | | Tetragnatha laboriosa Hentz, 1850 | Longjawed orb weavers | | Tetragnatha trichodes trichodes Thorell, 1878 | | | Tetragnatha versicolor Walckenaer, 1842 | | | Tetranychus (Tetranychus) urticae C. L. Koch, 1836 | Carmine spider mite | | Tetranychus pacificus McGregor, 1919 | Pacific mite | | Tetranychus turkestani Ugarov & Nik..., 1937 | Strawberry spider mite | | Tetranycopsis horridus Canestrini &..., 1876 | Hazel leaf mite | | Thanatus vulgaris Simon, 1870 | European running crab spider | | Theridion punctipes James Henry ..., 1924 | | | Trachyzelotes barbatus L. Koch, 1866 | Stealthy ground spider | | Trachyzelotes lyonneti Audouin, 1826 | Stealthy ground spider | | Trisetacus cembrae Tubeuf, 1910 | | | Trogloneta paradoxa Gertsch, 1960 | | | Uroobovella vinicolora Vitzthum, 1926 | | | Urophonius brachycentrus brachycentrus Thorell, 1876 | | | Uropoda (Uropoda) minor Berlese, 1885 | | | Veigaia planicola Berlese, 1892 | Mite | | Xysticus montanensis Eugen von Ke..., 1887 | Littleleaf minerslettuce | | Zelotes laetus Octavius Pic..., 1872 | Ground spider | | Zelotes puritanus Chamberlin, 1922 | | | Zelotes tenuis (Carl Ludwig ..., 1866) | ⇒ Zelotes fulvaster Eugène Simon, 1878 | | Zoropsis spinimana Dufour, 1820 | Zoropsid spider | | Zygiella x-notata (Clerck, 1757) | ⇒ Guizygiella nadleri Heimer, 1984 |
Subnodes of Arachnida with occurrences in Alameda County
 | | Arachnida (Lamarck 1801) |
Links, sources and further information Arachnida at biolcoll.utu.fi
Arachnida at wiki.spinnen-forum.de
Arachnida at spiderling.de
Arachnida at wsc.nmbe.ch
Arachnida at artfakta.se
Arachnida at biodiversity.org.au
Arachnida at dyntaxa.se
Arachnida at gbif.org
Arachnida at irmng.org
Arachnida at itis.gov
Arachnida at marinespecies.org
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