Checklist for Class Arachnida Lamarck, 1801 (Arachnids)
and region Allegheny County (Pennsylvania, USA)
List of families for Allegheny County
50 Families width 151 Species and 1 Subspecies #AETCDSBLMPGHINOU
| Araneidae Simon, 1895 | Golden orb web spiders | 19 | Species | Taxom | | Eriophyidae Nalepa, 1898 | Blister mites | 5 | Species | Taxom | | Theridiidae (Sundevall, 1833) | Cobweb And Widow Spiders | 10 | Species | Taxom | | Agelenidae (C. L. Koch, 1837) | Agelenid Spiders | 4 | Species | Taxom | | Alloptidae Gaud, 1957 | | 1 | Species | Taxom | | Amblyommidae Banks, 1907 | | 2 | Species | Taxom | | Anyphaenidae Bertkau, 1878 | Anyphaenid sac spiders | 3 | Species | Taxom | | Corinnidae Karsch, 1880 | Ant-like Sac Spiders | 7 | Species | Taxom | | Dictynidae O. P-Cambridge, 1871 | Dictynid spiders | 2 | Species | Taxom | | Segestriidae Simon, 1893 | Six-eyed Spiders | 1 | Species | Taxom | | Ascidae Oudemans, 1905 | | 0 | Species | Taxom | | Aturidae Thor, 1900 | | 0 | Species | Taxom | | Thomisidae Sundevall, 1833 | Crab Spider | 10 | Species | Taxom | | Blattisociidae Garman, 1948 | | 1 | Species | Taxom | | Amaurobiidae Thorell, 1870 | Amaurobiids | 1 | Species | Taxom | | Carabodidae Koch, 1837 | | 1 | Species | Taxom | | Linyphiidae Blackwall, 1859 | Dwarf spiders | 12 | Species | Taxom | | Miturgidae Simon, 1885 | Long-legged sac spiders | 2 | Species | Taxom | | Chthoniidae Daday, 1888 | | 1 | Species | Taxom | | Clubionidae Wagner, 1887 | Clubiones | 1 | Species | Taxom | | Pisauridae Simon, 1890 | Big wolf spider | 3 | Species | Taxom | | Gnaphosidae (Pocock, 1898) | Flat-bellied ground spiders | 3 | Species | Taxom | | Dysderidae C. L. Koch, 1837 | Dysderid spiders | 2 | Species | Taxom | | Salticidae (Blackwall, 1842) | Jumping Spider | 10 | Species | Taxom | | Laelapidae Berlese, 1892 | | 1 | Species | Taxom | | Trombiculidae Ewing, 1929 | Chigger mites | 2 | Species | Taxom | | Tetragnathidae Menge, 1866 | Elongated Orb Weavers | 5 | Species | Taxom | | Harpirhynchidae Dubinin, 1957 | | 1 | Species | Taxom | | Sparassidae (Bertkau, 1872) | Giant crab spiders | 1 | Species | Taxom | | Histiostomatidae Berlese, 1897 | | 1 | Species | Taxom | | Ereynetidae Schrank, 1776 | | 1 | Species | Taxom | | Ixodidae (C. L. Koch, 1844) | Hard Tick | 1 | Species | Taxom | | Sclerosomatidae Simon, 1879 | Sclerosomatid Harvestmen | 4 | Species | Taxom | | Neobisiidae Chamberlin, 1930 | | 1 | Species | Taxom | | Mimetidae Simon, 1881 | Pirate spider | 2 | Species | Taxom | | Macronyssidae Oudemans, 1936 | Macronyssid Mites | 1 | Species | Taxom | | Oxyopidae Thorell, 1870 | Lynx spiders | 1 | Species | Taxom | | Tetranychidae Donnadieu, 1875 | Spider mites | 2 | Species | Taxom | | Lycosidae (Lehtinen & H..., 1979) | Ground Spiders | 13 | Species | Taxom | | Parasitidae Oudemans, 1901 | Beetle Mites | 0 | Species | Taxom | | Phalangiidae Latreille, 1802 | Daddy-Long-Legs | 1 | Species | Taxom | | Philodromidae (Thorell, 1870) | False crab spiders | 5 | Species | Taxom | | Pholcidae C. L. Koch, 1851 | Carpenter spider | 3 | Species | Taxom | | Tanaupodidae Thor, 1935 | | 1 | Species | Taxom | | Pygmephoridae Krczal, 1964 | | 0 | Species | Taxom | | Myobiidae Megnin, 1877 | | 0 | Species | Taxom | | Tengellidae Dahl, 1908 | Tengellid spiders | 1 | Species | Taxom | | Tarsonemidae Kramer, 1877 | Tarsonemid mites | 1 | Species | Taxom | | Unionicolidae Oudemans, 1909 | | 0 | Species | Taxom | | Bothriuridae Simon, 1880 | | 1 | Species | Taxom |
Genera for Allegheny County
118 Genera with 151 Species #ABCDEFGHILMNOPRSTUVWX
| Acacesia Simon, 1847 | | 1 | Species | Taxom | | Aceria Keifer, 1891 | | 2 | Species | Taxom | Achaearanea Strand, 1929 | | 0 | Species | Taxom | | Aculus Keifer, 1889 | | 1 | Species | Taxom | | Agelenopsis Giebel, 1933 | American grass spiders | 3 | Species | Taxom | | Alloptes Canestrini, 1976 | | 1 | Species | Taxom | | Amblyomma hirtum. Neumann, 1758 | | 1 | Species | Taxom | | Anyphaena Sundevall, 1866 | | 1 | Species | Taxom | | Apochinomma Pavesi, 1896 | | 1 | Species | Taxom | | Arachosia O. P.-Cambridge, 1909 | | 1 | Species | Taxom | | Araneus Clerck, 1872 | Angulate & roundshouldered orbweavers | 6 | Species | Taxom | | Araniella Chamberlin &..., 1847 | Cucumber spiders | 1 | Species | Taxom | | Archaeodictyna Caporiacco, 1871 | | 1 | Species | Taxom | | Argiope Audouin, 1775 | Garden orbweavers | 1 | Species | Taxom | | Ariadna Audouin, 1842 | | 1 | Species | Taxom | | Asagena Sundevall, 1882 | | 1 | Species | Taxom | Asca von Heyden, 1826 | | 0 | Species | Taxom | Aturus Kramer, 1875 | | 0 | Species | Taxom | | Bassaniana Strand, 1880 | Bark crab spiders | 1 | Species | Taxom | | Blattisocius Keegan, 1947 | | 1 | Species | Taxom | | Callobius Chamberlin, 1846 | Hacklemesh Weaver | 1 | Species | Taxom | | Carabodes Koch, 1914 | | 1 | Species | Taxom | | Castianeira Keyserling, 1942 | Ant-Mimic Sac Spiders | 2 | Species | Taxom | | Ceraticelus Simon, 1874 | | 1 | Species | Taxom | | Cheiracanthium C. L. Koch, 1864 | Longlegged sac spiders | 2 | Species | Taxom | | Chthonius Koch, 1790 | | 1 | Species | Taxom | | Cicurina Menge, 1886 | | 1 | Species | Taxom | | Clubiona Latreille, 1866 | Leaf curling sac spiders | 1 | Species | Taxom | | Dermacentor Koch, 1821 | Dog Ticks | 1 | Species | Taxom | | Dipoena Thorell, 1882 | | 1 | Species | Taxom | | Dolomedes Latreille, 1837 | Dock spiders | 3 | Species | Taxom | | Drassyllus Chamberlin, 1922 | | 2 | Species | Taxom | | Dysdera Latreille, 1910 | | 2 | Species | Taxom | | Enoplognatha Pavesi, 1850 | | 1 | Species | Taxom | | Eriophyes Siebold, 1857 | | 1 | Species | Taxom | | Eris C. L. Koch, 1845 | | 1 | Species | Taxom | | Eulaelaps Berlese, 1839 | | 1 | Species | Taxom | | Eustala Simon, 1842 | | 1 | Species | Taxom | Eutrombicula Ewing, 1938 | | 0 | Species | Taxom | | Floricomus Crosby & Bishop, 1882 | | 1 | Species | Taxom | | Frontinella Cambridge, 1841 | | 1 | Species | Taxom | | Gasteracantha Sundevall, 1758 | Spiny Backed Orb Weaver | 1 | Species | Taxom | | Glenognatha Simon, 1894 | | 1 | Species | Taxom | | Gonatium Menge, 1933 | | 1 | Species | Taxom | | Habronattus F. O. P.-Cam..., 1846 | Paradise Spiders | 2 | Species | Taxom | | Haplodrassus Chamberlin, 1839 | | 1 | Species | Taxom | | Harpirhynchus Megnin, 1911 | | 1 | Species | Taxom | | Heteropoda Latreille, 1767 | | 1 | Species | Taxom | | Histiostoma Kramer, 2001 | | 1 | Species | Taxom | | Hydranetes Kethley, 1971 | | 1 | Species | Taxom | | Hypselistes Simon, 1875 | | 1 | Species | Taxom | | Hypsosinga Ausserer, 1847 | | 2 | Species | Taxom | | Ixodes Latreille, 1869 | | 1 | Species | Taxom | | Larinioides Caporiacco, 1758 | Furrow spiders | 3 | Species | Taxom | | Latrodectus Walckenaer, 1837 | Black widow spider | 1 | Species | Taxom | | Leiobunum C. L. Koch, 1821 | Daddy Long Leg Spiders | 3 | Species | Taxom | | Lupettiana Brescovit, 1896 | | 1 | Species | Taxom | | Meriola Davie, 1895 | | 1 | Species | Taxom | | Micrathena Sundevall, 1805 | | 1 | Species | Taxom | | Microbisium Chamberlin, 1895 | | 1 | Species | Taxom | | Mimetus Hentz, 1923 | Pirate spiders | 2 | Species | Taxom | | Misumena Latreille, 1758 | Flower crab spiders | 1 | Species | Taxom | | Misumessus Banks, 1880 | | 1 | Species | Taxom | | Naphrys Edwards, 1846 | | 1 | Species | Taxom | | Neoscona Simon, 1842 | Spotted orbweavers | 1 | Species | Taxom | | Neotrombicula Hirst, 1928 | | 1 | Species | Taxom | | Neriene Blackwall, 1842 | | 1 | Species | Taxom | | Ornithonyssus Sambon, 1913 | | 1 | Species | Taxom | | Oxyopes Latreille, 1845 | Lynx Spiders | 1 | Species | Taxom | | Pachygnatha Sundevall, 1884 | Thickjawed Orb Weavers | 1 | Species | Taxom | | Panonychus Yokoyama, 1836 | | 1 | Species | Taxom | | Pardosa C. L. Koch, 1844 | Thin-legged Wolf Spider | 4 | Species | Taxom | | Pelegrina Franganillo, 1837 | White-Cheeked Jumping Spiders | 3 | Species | Taxom | Pergamasus Berlese, 1903 | | 0 | Species | Taxom | | Phalangium Linnaeus, 1761 | | 1 | Species | Taxom | | Phidippus C. L. Koch, 1885 | | 1 | Species | Taxom | | Philodromus Walckenaer, 1880 | Running Crab Spider | 2 | Species | Taxom | | Pholcus Walckenaer, 1775 | | 2 | Species | Taxom | | Phrurotimpus Chamberlin &..., 1911 | | 1 | Species | Taxom | | Pirata Sundevall, 1885 | Pirate wolf spiders | 1 | Species | Taxom | | Polydiscia Methlagl, 2003 | | 1 | Species | Taxom | Pygmephorus Kramer, 1877 | | 0 | Species | Taxom | | Rabidosa Roewer, 1844 | | 1 | Species | Taxom | Radfordia Ewing, 1938 | | 0 | Species | Taxom | | Salticus Latreille, 1757 | Zebra Spider | 1 | Species | Taxom | | Satilatlas Keyserling, 1886 | | 1 | Species | Taxom | | Schizocosa Chamberlin, 1844 | | 3 | Species | Taxom | | Scotinella Banks, 1890 | | 1 | Species | Taxom | | Sisicottus Bishop & Crosby, 1999 | | 1 | Species | Taxom | | Sitticus Simon, 1895 | | 1 | Species | Taxom | | Socalchemmis Platnick & U..., 1919 | | 1 | Species | Taxom | | Souessa Crosby & Bishop, 1874 | | 1 | Species | Taxom | | Spermophora Hentz, 1836 | | 1 | Species | Taxom | | Steatoda Sundevall, 1802 | False black widows | 1 | Species | Taxom | | Stemonyphantes Menge, 1758 | | 1 | Species | Taxom | | Synema Simon, 1847 | | 1 | Species | Taxom | | Tarsonemus Canestrini &..., 1939 | | 1 | Species | Taxom | | Tegenaria Latreille, 1758 | House spiders | 1 | Species | Taxom | | Tennesseellum Petrunkevitch, 1882 | | 1 | Species | Taxom | | Tetragnatha Latreille, 1842 | Four-jawed spider | 3 | Species | Taxom | | Tetranychus Dufour, 1836 | | 1 | Species | Taxom | | Thanatus C. L. Koch, 1758 | | 1 | Species | Taxom | | Theridion Walckenaer, 1879 | Tangle-Web Spiders | 3 | Species | Taxom | | Theridula Emerton, 1842 | | 2 | Species | Taxom | | Tibellus Simon, 1802 | Slender Crab Spider | 2 | Species | Taxom | | Tigrosa Brady, 1837 | | 3 | Species | Taxom | | Tmarus Simon, 1837 | | 1 | Species | Taxom | | Togwoteeus Roewer, 1877 | Togwot´s harvestmen | 1 | Species | Taxom | | Trachelas L. Koch, 1847 | Running Spider | 1 | Species | Taxom | | Trochosa C. L. Koch, 1778 | | 1 | Species | Taxom | Trombicula Berlese, 1905 | | 0 | Species | Taxom | Unionicola Haldeman, 1842 | | 0 | Species | Taxom | | Urophonius Pocock, 1876 | | 1 | Species | Taxom | | Vasates Shimer, 1869 | | 1 | Species | Taxom | | Verrucosa McCook, 1842 | | 1 | Species | Taxom | | Walchia Ewing, 1964 | | 1 | Species | Taxom | | Walckenaeria Blackwall, 1882 | | 1 | Species | Taxom | | Xysticus Koch, 1880 | Ground Crab Spider | 5 | Species | Taxom |
Species list for Allegheny County
151 Species and 1 Subspecies | Acacesia hamata Hentz, 1847 | Orb weavers | | Aceria brevipunctata (Nalepa, 1889) | ⇒ Aceria campestricola Frauenfeld, 1865 | | Aceria erinea Nalepa, 1891 | Persian walnut erineum mite | | Aculus tetanothrix Nalepa, 1889 | Willow Bead Gall Mite | | Agelenopsis pennsylvanica Carl Ludwig ..., 1843 | | | Agelenopsis potteri John Blackwall, 1846 | Potter'S Grass Spider | | Agelenopsis utahana Ralph Vary C..., 1933 | | | Alloptes (Sternalloptes) cyrtolobus Gaud, 1976 | | | Amblyomma americanum Linnaeus, 1758 | Lone Star Tick | | Anyphaena pectorosa Ludwig Carl ..., 1866 | Redflower buckwheat | | Apochinomma formica Eugène Simon, 1896 | | | Arachosia cubana Richard C. B..., 1909 | | | Araneus diadematus Clerck, 1758 | Cross orbweaver | | Araneus marmoreus Clerck, 1757 | Marbled Orb Weaver | | Araneus miniatus Walckenaer, 1842 | | | Araneus nordmanni Thorell, 1870 | Nordmann'S Orbweaver | | Araneus pegnia Walckenaer, 1842 | Orb weavers | | Araneus saevus L. Koch, 1872 | Fierce Orbweaver | | Araniella displicata Hentz, 1847 | Six-spotted orbweaver | | Archaeodictyna ammophila Menge, 1871 | | | Argiope trifasciata Forsskål, 1775 | Banded Argiope | | Ariadna bicolor Nicholas Mar..., 1842 | | | Asagena americana James Henry ..., 1882 | Two-Spotted Cobweb Spider | | Bassaniana versicolor Eugen von Ke..., 1880 | Bark Crab Spider | | Blattisocius keegani Fox, 1947 | Mite | | Callobius bennetti Blackwall, 1846 | Bennett'S Laceweaver | | Carabodes scymnus Hull, 1914 | | | Castianeira descripta Nicholas Mar..., 1847 | Red Spotted Ant Mimic Spider | | Castianeira variata Willis J. Ge..., 1942 | Club mosses | | Ceraticelus fissiceps Octavius Pic..., 1874 | | | Cheiracanthium inclusum Hentz, 1847 | Agrarian sac spider | | Cheiracanthium mildei L. Koch, 1864 | North Yellow Sac Spider | | Chthonius (Ephippiochthonius) tetrachelatus Preyssler, 1790 | Dimple-clawed Chthonid | | Cicurina robusta Eugène Simon, 1886 | | | Clubiona abboti Ludwig Carl ..., 1866 | Redflower buckwheat | | Dermacentor variabilis Say, 1821 | American dog tick | | Dipoena nigra (James Henry ..., 1882) | ⇒ Theridula nigerrima Alexander Pe..., 1911 | | Dolomedes tenebrosus (Nicholas Mar..., 1844) | ⇒ Dolomedes vittatus Charles Atha..., 1837 | | Dolomedes triton Charles Atha..., 1837 | Six Spotted Fishing Spider | | Dolomedes vittatus Charles Atha..., 1837 | Milkweed | | Drassyllus niger Banks, 1896 | | | Drassyllus orgilus (Chamberlin, 1922) | ⇒ Drassyllus dromeus Chamberlin, 1922 | | Dysdera crocata (Koch, 1838) | ⇒ Dysdera maurusia Tord Tamerla..., 1873 | | Dysdera nomada Eugène Simon, 1910 | Stocky cerith | | Enoplognatha marmorata (Nicholas Mar..., 1850) | ⇒ Enoplognatha caricis Fickert, 1876 | | Eriophyes tiliae Pagenstecher, 1857 | Bugle gall | | Eris militaris Nicholas Mar..., 1845 | Bronze jumper | | Eulaelaps stabularis C.L.Koch, 1839 | Mite | | Eustala anastera (Walckenaer, 1842) | ⇒ Eustala conchlea Henry Christ..., 1888 | | Floricomus rostratus James Henry ..., 1882 | | | Frontinella pyramitela (Walckenaer, 1841) | ⇒ Frontinella communis Hentz, 1850 | | Gasteracantha cancriformis Linnaeus, 1758 | Crab spider | | Glenognatha foxi McCook, 1894 | Longjawed orb weavers | | Gonatium crassipalpum Elizabeth Ba..., 1933 | | | Habronattus agilis (Richard C. B..., 1893) | ⇒ Habronattus cognatus Peckham & Pe..., 1901 | | Habronattus decorus John Blackwall, 1846 | | | Haplodrassus signifer (C. L. Koch, 1839) | ⇒ Haplodrassus pugnans Simon, 1880 | | Harpirhynchus brevis Ewing, 1911 | | | Heteropoda venatoria (Linnaeus, 1767) | ⇒ Heteropoda simplex Jäger & Ono, 2000 | | Histiostoma (Histiostoma) heriades Fain & Pauly, 2001 | | | Hydranetes tropisternus Kethley, 1971 | | | Hypselistes florens Octavius Pic..., 1875 | Peatland Sheetweb Weaver | | Hypsosinga pygmaea Sundevall, 1831 | | | Hypsosinga rubens Nicholas Mar..., 1847 | | | Ixodes cookei (Packard, 1869) | ⇒ Ixodes conepati Cooley & Kohls, 1943 | | Larinioides cornutus Clerck, 1758 | Furrow orb spider | | Larinioides patagiatus Clerck, 1758 | Ornamental Orbweaver | | Larinioides sclopetarius (Clerck, 1758) | ⇒ Larinioides sericatus Clerck, 1757 | | Latrodectus variolus (Walckenaer, 1837) | ⇒ Latrodectus hesperus Chamberlin &..., 1935 | | Leiobunum ventricosum Wood, 1870 | | | Leiobunum verrucosum Wood, 1870 | | | Leiobunum vittatum Say, 1821 | Eastern Harvestman | | Lupettiana mordax Octavius Pic..., 1896 | | | Meriola decepta Richard C. B..., 1895 | Corinnid sac spiders | | Micrathena gracilis Charles Atha..., 1805 | Orb Weavers | | Microbisium parvulum Banks, 1895 | | | Mimetus notius Chamberlin, 1923 | Mt. Livermore threeband | | Mimetus puritanus Chamberlin, 1923 | Common Pirate Spider | | Misumena vatia Clerck, 1758 | Crab Spider | | Misumessus oblongus Eugen von Ke..., 1880 | American Green Crab Spider | | Naphrys pulex Nicholas Mar..., 1846 | Flea Jumping Spider | | Neoscona arabesca Walckenaer, 1842 | Arabesque orbweaver | | Neotrombicula (Digenualaea) microti Ewing, 1928 | | | Neriene radiata Walckenaer, 1842 | Filmy dome spider | | Ornithonyssus bacoti Hirst, 1913 | Mite | | Oxyopes salticus Hentz, 1845 | Lynx spider | | Pachygnatha autumnalis Marx, 1884 | Big-Eyed Thick-Jawed Spider | | Panonychus (Panonychus) ulmi Koch, 1836 | ERM | | Pardosa distincta (John Blackwall, 1846) | ⇒ Pardosa hyperborea Thorell, 1872 | | Pardosa fuscula Tord Tamerla..., 1875 | | | Pardosa milvina Nicholas Mar..., 1844 | Shore spider | | Pardosa saxatilis Nicholas Mar..., 1844 | | | Pelegrina flaviceps Kaston, 1973 | Big-Headed White-Cheeked Jumping Spider | | Pelegrina galathea Charles Atha..., 1837 | Jumping Spiders | | Pelegrina proterva Charles Atha..., 1837 | Common White-Cheeked Jumping Spider | | Phalangium opilio Linnaeus, 1761 | Brown daddy-long-legs | | Phidippus clarus Keyserling, 1885 | Brilliant Jumping Spider | | Philodromus keyserlingi Marx, 1890 | | | Philodromus praelustris Eugen von Ke..., 1880 | | | Pholcus manueli Gertsch, 1937 | Cellar Spider | | Pholcus phalangioides (Fuesslin, 1775) | ⇒ Smeringopus pallidus Blackwall, 1858 | | Phrurotimpus borealis James Henry ..., 1911 | Greater Ant-Mimic Corinne Spider | | Pirata montanus Emerton, 1885 | Dark-Legged Pirate Wolf Spider | | Polydiscia deuterosminthurus Baquero, Mor..., 2003 | | | Rabidosa punctulata Nicholas Mar..., 1844 | Dotted Wolf Spider | | Salticus scenicus (Clerck, 1757) | ⇒ Salticus cingulatus Panzer, 1797 | | Satilatlas marxi Eugen von Ke..., 1886 | Thin-ribbed mountainsnail | | Schizocosa crassipalpata Carl Friedri..., 1951 | San Diego bird's-foot trefoil | | Schizocosa ocreata (Nicholas Mar..., 1844) | ⇒ Schizocosa rovneri Uetz & Charl..., 1979 | | Schizocosa saltatrix Nicholas Mar..., 1844 | | | Scotinella pugnata James Henry ..., 1890 | | | Sisicottus panopeus FrantiÅ¡ek M..., 1999 | | | Sitticus concolor (Banks, 1895) | ⇒ Sitticus cursor Barrows, 1919 | | Socalchemmis dolichopus Ralph Vary C..., 1919 | | | Souessa spinifera Octavius Pic..., 1874 | | | Spermophora senoculata Dugès, 1836 | Short-bodied cellar spider | | Steatoda triangulosa Walckenaer, 1802 | Triangulate bud spider | | Stemonyphantes lineatus (Linnaeus, 1758) | ⇒ Stemonyphantes blauveltae Willis J. Ge..., 1951 | | Synema parvulum Nicholas Mar..., 1847 | Black Tail Crab Spider | | Tarsonemus (Tarsonemus) cryptocephalus Ewing, 1939 | | | Tegenaria domestica (Clerck, 1758) | ⇒ Tegenaria parietina Fourcroy, 1785 | | Tennesseellum formica James Henry ..., 1882 | | | Tetragnatha laboriosa Hentz, 1850 | Longjawed orb weavers | | Tetragnatha straminea Emerton, 1884 | | | Tetragnatha versicolor Walckenaer, 1842 | | | Tetranychus (Tetranychus) urticae C. L. Koch, 1836 | Carmine spider mite | | Thanatus formicinus (Clerck, 1758) | ⇒ Thanatus miniaceus Simon, 1880 | | Theridion differens (James Henry ..., 1882) | ⇒ Theridion glaucescens Lawrence Becker, 1879 | | Theridion frondeum Nicholas Mar..., 1850 | Eastern Long-Legged Cobweaver | | Theridion glaucescens Lawrence Becker, 1879 | | | Theridula emertoni Herbert Walt..., 1954 | Emerton'S Bitubercled Cobweaver | | Theridula opulenta (Charles Atha..., 1842) | ⇒ Theridula gonygaster Eugène Simon, 1873 | | Tibellus maritimus Menge, 1875 | Goblin shark | | Tibellus oblongus (Walckenaer, 1802) | ⇒ Tibellus maritimus Menge, 1875 | | Tigrosa annexa Chamberlin &..., 1944 | | | Tigrosa grandis Banks, 1894 | | | Tigrosa helluo Walckenaer, 1837 | Wetland Giant Wolf Spider | | Tmarus angulatus Charles Atha..., 1837 | Tuberculated Crab Spider | | Togwoteeus biceps Thorell, 1877 | | | Trachelas tranquillus Nicholas Mar..., 1847 | Broad faced sac spider | | Trochosa ruricola (De Geer, 1778) | ⇒ Trochosa hispanica Eugène Simon, 1870 | | Urophonius brachycentrus brachycentrus Thorell, 1876 | | | Vasates quadripedes Shimer, 1869 | Maple Bladder Gall Mite | | Verrucosa arenata Charles Atha..., 1842 | Arrowhead Orb Weaver | | Walchia (Wenia) isonychia Nadchatram &..., 1964 | | | Walckenaeria pallida James Henry ..., 1882 | | | Xysticus bicuspis (Eugen von Ke..., 1887) | ⇒ Xysticus locuples Eugen von Ke..., 1880 | | Xysticus elegans Eugen von Ke..., 1880 | Elegant crab spider | | Xysticus ferox Nicholas Mar..., 1847 | Tan Crab Spider | | Xysticus helophilus Eugène Simon, 1890 | | | Xysticus triguttatus Keyserling, 1880 | Three-banded Crab Spider |
Subnodes of Arachnida with occurrences in Allegheny 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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