Checklist for Class Arachnida Lamarck, 1801 (Arachnids)
and region Polk County (Minnesota, USA)
List of families for Polk County (Minnesota)
27 Families width 181 Species #ALCDTPGSHUN
| Agelenidae (C. L. Koch, 1837) | Agelenid Spiders | 4 | Species | Taxom | | Liocranidae Simon, 1897 | Liocranid sac spiders | 1 | Species | Taxom | | Linyphiidae Blackwall, 1859 | Dwarf spiders | 14 | Species | Taxom | | Lycosidae Lehtinen & H..., 1979 | Ground Spiders | 17 | Species | Taxom | | Amaurobiidae Thorell, 1870 | Amaurobiids | 3 | Species | Taxom | | Corinnidae Karsch, 1880 | Ant-like Sac Spiders | 2 | Species | Taxom | | Araneidae Simon, 1895 | Golden orb web spiders | 12 | Species | Taxom | | Dictynidae (O. P-Cambridge, 1871) | Dictynid spiders | 18 | Species | Taxom | | Theridiidae Sundevall, 1833 | Cobweb And Widow Spiders | 13 | Species | Taxom | | Pterolichidae Trouessart, 1899 | | 1 | Species | Taxom | | Cheliferidae Risso, 1826 | | 1 | Species | Taxom | | Clubionidae Wagner, 1887 | Clubiones | 10 | Species | Taxom | | Amblyommidae Banks, 1907 | | 1 | Species | Taxom | | Pisauridae (Simon, 1890) | Big wolf spider | 3 | Species | Taxom | | Gnaphosidae Pocock, 1898 | Flat-bellied ground spiders | 17 | Species | Taxom | | Salticidae (Blackwall, 1842) | Jumping Spider | 21 | Species | Taxom | | Hahniidae Bertkau, 1878 | Dwarf sheet spiders | 2 | Species | Taxom | | Uloboridae Thorell, 1869 | Cribellate orb weavers | 1 | Species | Taxom | | Sclerosomatidae Simon, 1879 | Sclerosomatid Harvestmen | 3 | Species | Taxom | | Tetragnathidae Menge, 1866 | Elongated Orb Weavers | 12 | Species | Taxom | | Thomisidae Sundevall, 1833 | Crab Spider | 12 | Species | Taxom | | Nemastomatidae Simon, 1872 | | 1 | Species | Taxom | | Hydryphantidae Piersig, 1896 | | 0 | Species | Taxom | | Philodromidae Thorell, 1870 | False crab spiders | 9 | Species | Taxom | | Pholcidae C. L. Koch, 1851 | Carpenter spider | 1 | Species | Taxom | | Tanaupodidae Thor, 1935 | | 1 | Species | Taxom | | Trombiculidae Ewing, 1929 | Chigger mites | 1 | Species | Taxom |
Genera for Polk County (Minnesota)
96 Genera with 181 Species #ACDEGHLMNOPRSTVWXYZ
| Agelenopsis Giebel, 1933 | American grass spiders | 3 | Species | Taxom | | Agroeca Westring, 1892 | | 1 | Species | Taxom | | Agyneta Hull, 1892 | | 2 | Species | Taxom | | Alopecosa Simon, 1877 | Fox spiders | 2 | Species | Taxom | | Amaurobius Koch, 1909 | | 1 | Species | Taxom | | Apochinomma Pavesi, 1896 | | 1 | Species | Taxom | | Araneus Clerck, 1951 | Angulate & roundshouldered orbweavers | 4 | Species | Taxom | | Arctosa C. L. Koch, 1877 | Bear Spiders | 1 | Species | Taxom | | Argenna Thorell, 1911 | | 1 | Species | Taxom | | Asagena Sundevall, 1882 | | 1 | Species | Taxom | | Aterolichus J. Gaud, 1980 | | 1 | Species | Taxom | | Callobius Chamberlin, 1846 | Hacklemesh Weaver | 1 | Species | Taxom | | Canalidion Wunderlich, 1882 | | 1 | Species | Taxom | | Castianeira Keyserling, 1841 | Ant-Mimic Sac Spiders | 1 | Species | Taxom | | Chelifer Geoffroy, 1758 | | 1 | Species | Taxom | | Cicurina Menge, 1892 | | 3 | Species | Taxom | | Clubiona Latreille, 1843 | Leaf curling sac spiders | 9 | Species | Taxom | | Coras Simon, 1890 | Funnel Web Spiders | 1 | Species | Taxom | | Cybaeopsis Strand, 1935 | | 1 | Species | Taxom | | Dermacentor Koch, 1821 | Dog Ticks | 1 | Species | Taxom | | Dictyna Sundevall, 1881 | | 7 | Species | Taxom | | Diplostyla Emerton, 1834 | | 1 | Species | Taxom | | Dismodicus Simon, 1882 | | 1 | Species | Taxom | | Dolomedes Latreille, 1844 | Dock spiders | 3 | Species | Taxom | | Drapetisca Menge, 1909 | | 1 | Species | Taxom | | Drassodes Westring, 1887 | | 1 | Species | Taxom | | Drassyllus Chamberlin, 1922 | | 3 | Species | Taxom | | Elaver O. P.-Cambridge, 1866 | | 1 | Species | Taxom | | Emblyna Chamberlin, 1850 | | 6 | Species | Taxom | | Erigone Audouin, 1928 | Black Dwarf Spiders | 1 | Species | Taxom | | Eris C. L. Koch, 1845 | | 1 | Species | Taxom | | Evarcha Simon, 1883 | | 1 | Species | Taxom | | Ghelna Maddison, 1897 | | 1 | Species | Taxom | | Gnaphosa Latreille, 1896 | | 4 | Species | Taxom | | Gonatium Menge, 1933 | | 1 | Species | Taxom | | Grammonota Emerton, 1875 | | 1 | Species | Taxom | | Habronattus F. O. P.-Cam..., 1846 | Paradise Spiders | 2 | Species | Taxom | | Hahnia C. L. Koch, 1875 | | 1 | Species | Taxom | | Haplodrassus Chamberlin, 1839 | | 3 | Species | Taxom | | Hentzia Marx, 1846 | | 1 | Species | Taxom | | Hogna Simon, 1885 | | 1 | Species | Taxom | | Hypselistes Simon, 1902 | | 2 | Species | Taxom | | Hypsosinga Ausserer, 1847 | | 2 | Species | Taxom | | Hyptiotes Walckenaer, 1935 | Triangle web spiders | 1 | Species | Taxom | | Larinioides Caporiacco, 1758 | Furrow spiders | 1 | Species | Taxom | | Lathys Simon, 1891 | | 1 | Species | Taxom | | Leiobunum C. L. Koch, 1821 | Daddy Long Leg Spiders | 3 | Species | Taxom | | Maevia C. L. Koch, 1837 | | 1 | Species | Taxom | | Mangora O. P.-Cambridge, 1847 | | 2 | Species | Taxom | | Maratus Karsch, 1883 | Peacock spiders | 1 | Species | Taxom | | Marpissa C. L. Koch, 1888 | | 2 | Species | Taxom | | Meta C. L. Koch, 1933 | Cave Orb Weavers | 1 | Species | Taxom | | Metellina Chamberlin &..., 1894 | | 1 | Species | Taxom | | Micaria Westring, 1871 | | 1 | Species | Taxom | | Micrathena Sundevall, 1805 | | 1 | Species | Taxom | | Microlinyphia Gerhardt, 1882 | Platform spiders | 1 | Species | Taxom | | Misumessus Banks, 1880 | | 1 | Species | Taxom | | Naphrys Edwards, 1846 | | 1 | Species | Taxom | | Nemastoma C.L.Koch, 1851 | | 1 | Species | Taxom | | Neoantistea Gertsch, 1887 | | 1 | Species | Taxom | | Neoscona Simon, 1847 | Spotted orbweavers | 1 | Species | Taxom | | Neriene Blackwall, 1830 | | 1 | Species | Taxom | | Orodrassus Chamberlin, 1877 | | 2 | Species | Taxom | | Pachygnatha Sundevall, 1845 | Thickjawed Orb Weavers | 4 | Species | Taxom | Parathyas Lundblad, 1926 | | 0 | Species | Taxom | | Pardosa C. L. Koch, 1877 | Thin-legged Wolf Spider | 7 | Species | Taxom | | Pelegrina Franganillo, 1837 | White-Cheeked Jumping Spiders | 3 | Species | Taxom | | Phidippus C. L. Koch, 1885 | | 2 | Species | Taxom | | Philodromus Walckenaer, 1847 | Running Crab Spider | 5 | Species | Taxom | | Pholcus Walckenaer, 1937 | | 1 | Species | Taxom | | Pirata Sundevall, 1757 | Pirate wolf spiders | 2 | Species | Taxom | | Piratula Roewer, 1885 | | 1 | Species | Taxom | | Pityohyphantes Simon, 1850 | Hammock Spiders | 1 | Species | Taxom | | Polydiscia Methlagl, 2003 | | 1 | Species | Taxom | | Rhysodromus Schick, 1819 | | 1 | Species | Taxom | | Schizocosa Chamberlin, 1951 | | 1 | Species | Taxom | | Sergiolus Simon, 1837 | | 1 | Species | Taxom | | Sibianor Logunov, 1934 | | 1 | Species | Taxom | | Sisicus Bishop & Crosby, 1938 | | 1 | Species | Taxom | | Sitticus Simon, 1879 | | 2 | Species | Taxom | | Steatoda Sundevall, 1850 | False black widows | 1 | Species | Taxom | | Talavera Peckham & Pe..., 1895 | | 1 | Species | Taxom | | Tetragnatha Latreille, 1842 | Four-jawed spider | 6 | Species | Taxom | | Thanatus C. L. Koch, 1845 | | 2 | Species | Taxom | | Theridion Walckenaer, 1802 | Tangle-Web Spiders | 6 | Species | Taxom | | Theridula Emerton, 1842 | | 2 | Species | Taxom | | Thymoites Keyserling, 1882 | | 1 | Species | Taxom | | Tibellus Simon, 1875 | Slender Crab Spider | 1 | Species | Taxom | | Tmarus Simon, 1837 | | 1 | Species | Taxom | | Trochosa C. L. Koch, 1856 | | 2 | Species | Taxom | | Viciria Thorell, 1903 | | 1 | Species | Taxom | | Walchia Ewing, 1964 | | 1 | Species | Taxom | | Xysticus Koch, 1880 | Ground Crab Spider | 10 | Species | Taxom | | Yunohamella Yoshida, 1842 | | 1 | Species | Taxom | | Zelotes Gistel, 1922 | | 2 | Species | Taxom | | Zygiella F. O. P.-Cam..., 1964 | | 1 | Species | Taxom |
Species list for Polk County (Minnesota)
181 Species | Agelenopsis pennsylvanica Carl Ludwig ..., 1843 | | | Agelenopsis potteri John Blackwall, 1846 | Potter'S Grass Spider | | Agelenopsis utahana Ralph Vary C..., 1933 | | | Agroeca ornata Banks, 1892 | | | Agyneta fabra Keyserling, 1886 | | | Agyneta unimaculata Banks, 1892 | | | Alopecosa aculeata Clerck, 1758 | | | Alopecosa kochi Keyserling, 1877 | | | Amaurobius borealis James Henry ..., 1909 | Largeleaf sphagnum | | Apochinomma formica Eugène Simon, 1896 | | | Araneus bicentenarius McCook, 1888 | Giant Lichen Orbweaver | | Araneus corticarius Emerton, 1884 | | | Araneus groenlandicola Strand, 1906 | | | Araneus iviei Archer, 1951 | | | Arctosa rubicunda Eugen von Ke..., 1877 | | | Argenna obesa Emerton, 1911 | Largeleaf sphagnum | | Asagena americana James Henry ..., 1882 | Two-Spotted Cobweb Spider | | Aterolichus polyblastus J. Gaud, 1980 | | | Callobius bennetti Blackwall, 1846 | Bennett'S Laceweaver | | Canalidion montanum James Henry ..., 1882 | | | Castianeira cingulata Carl Ludwig ..., 1841 | Two-Banded Ant-Mimic Sac Spider | | Chelifer cancroides Linnaeus, 1758 | Book pseudoscorpion | | Cicurina arcuata (Eugen von Ke..., 1887) | ⇒ Cicurina arcata Ralph Vary C..., 1940 | | Cicurina brevis James Henry ..., 1890 | Small-Eared Meshweaver | | Cicurina placida Banks, 1892 | | | Clubiona abboti Ludwig Carl ..., 1866 | Redflower buckwheat | | Clubiona canadensis (James Henry ..., 1890) | ⇒ Clubiona pacifica Richard C. B..., 1896 | | Clubiona johnsoni Willis J. Ge..., 1941 | | | Clubiona kastoni Willis J. Ge..., 1941 | Kaston sac spider | | Clubiona maritima Ludwig Carl ..., 1867 | | | Clubiona obesa Nicholas Mar..., 1847 | Drummond's clematis | | Clubiona quebecana Charles Dent..., 1976 | | | Clubiona riparia Ludwig Carl ..., 1866 | Redflower buckwheat | | Clubiona trivialis Koch, 1843 | | | Coras montanus (James Henry ..., 1890) | ⇒ Coras medicinalis Nicholas Mar..., 1821 | | Cybaeopsis euopla Bishop & Crosby, 1935 | | | Dermacentor variabilis Say, 1821 | American dog tick | | Dictyna alaskae Ralph Vary C..., 1947 | | | Dictyna arundinacea (Linnaeus, 1758) | ⇒ Archaeodictyna consecuta Octavius Pic..., 1872 | | Dictyna bostoniensis James Henry ..., 1888 | | | Dictyna brevitarsa James Henry ..., 1915 | Florida sphagnum | | Dictyna foliacea Nicholas Mar..., 1850 | | | Dictyna major Menge, 1869 | | | Dictyna volucripes Eugen von Ke..., 1881 | Mesh weaver | | Diplostyla concolor Wider, 1834 | | | Dismodicus decemoculatus James Henry ..., 1882 | | | Dolomedes scriptus Hentz, 1845 | Striped Fishing Spider | | Dolomedes striatus Christoph Go..., 1869 | | | Dolomedes tenebrosus (Nicholas Mar..., 1844) | ⇒ Dolomedes vittatus Charles Atha..., 1837 | | Drapetisca alteranda Ralph Vary C..., 1909 | Northern Long-Toothed Sheetweaver | | Drassodes neglectus Keyserling, 1887 | | | Drassyllus depressus Emerton, 1890 | | | Drassyllus niger Banks, 1896 | | | Drassyllus orgilus (Chamberlin, 1922) | ⇒ Drassyllus dromeus Chamberlin, 1922 | | Elaver excepta Ludwig Carl ..., 1866 | White Sac Spider | | Emblyna completoides Wilton Ivie, 1947 | | | Emblyna hentzi Kaston, 1945 | | | Emblyna manitoba Wilton Ivie, 1947 | | | Emblyna maxima Richard C. B..., 1892 | | | Emblyna phylax Willis J. Ge..., 1936 | | | Emblyna sublata Nicholas Mar..., 1850 | | | Erigone blaesa Crosby & Bishop, 1928 | | | Eris militaris Nicholas Mar..., 1845 | Bronze jumper | | Evarcha hoyi (Peckham & Pe..., 1883) | ⇒ Evarcha proszynskii Marusik & Lo..., 1998 | | Ghelna canadensis Richard C. B..., 1897 | | | Gnaphosa borea KulczyÅ„ski, 1908 | Annual buckwheat | | Gnaphosa brumalis Tord Tamerla..., 1875 | | | Gnaphosa microps (Holm, 1939) | ⇒ Gnaphosa sticta KulczyÅ„ski, 1908 | | Gnaphosa parvula Nathan Banks, 1896 | | | Gonatium crassipalpum Elizabeth Ba..., 1933 | | | Grammonota pictilis Octavius Pic..., 1875 | | | Habronattus agilis (Richard C. B..., 1893) | ⇒ Habronattus cognatus Peckham & Pe..., 1901 | | Habronattus decorus John Blackwall, 1846 | | | Hahnia ononidum (Eugène Simon, 1875) | ⇒ Hahnia petrobia Eugène Simon, 1875 | | Haplodrassus eunis Chamberlin, 1922 | | | Haplodrassus hiemalis Emerton, 1909 | | | Haplodrassus signifer (C. L. Koch, 1839) | ⇒ Haplodrassus pugnans Simon, 1880 | | Hentzia mitrata Nicholas Mar..., 1846 | Crowned Hentzia Jumping Spider | | Hogna frondicola James Henry ..., 1885 | Forest Wolf Spider | | Hypselistes florens Octavius Pic..., 1875 | Peatland Sheetweb Weaver | | Hypselistes jacksoni Pickard-Camb..., 1902 | | | Hypsosinga pygmaea Sundevall, 1831 | | | Hypsosinga rubens Nicholas Mar..., 1847 | | | Hyptiotes gertschi Ralph Vary C..., 1935 | | | Larinioides cornutus Clerck, 1758 | Furrow orb spider | | Lathys pallida (Marx, 1891) | ⇒ Lathys alberta Willis J. Ge..., 1946 | | Leiobunum aldrichi Weed, 1893 | | | Leiobunum ventricosum Wood, 1870 | | | Leiobunum vittatum Say, 1821 | Eastern Harvestman | | Maevia inclemens Charles Atha..., 1837 | Dimorphic jumper | | Mangora gibberosa (Hentz, 1847) | ⇒ Mangora fascialata Franganillo, 1936 | | Mangora placida Hentz, 1847 | Tuft-Legged Orb Weaver | | Maratus nigromaculatus Keyserling, 1883 | | | Marpissa formosa Richard C. B..., 1892 | Short-Bellied Slender Jumping Spider | | Marpissa pikei Peckham & Pe..., 1888 | Pike slender jumper | | Meta ovalis Gertsch, 1933 | Eastern Cave Long-Jawed Spider | | Metellina curtisi McCook, 1894 | | | Micaria aenea (Tord Tamerla..., 1871) | ⇒ Micaria formicaria Sundevall, 1831 | | Micrathena gracilis Charles Atha..., 1805 | Orb Weavers | | Microlinyphia mandibulata James Henry ..., 1882 | | | Misumessus oblongus Eugen von Ke..., 1880 | American Green Crab Spider | | Naphrys pulex Nicholas Mar..., 1846 | Flea Jumping Spider | | Nemastoma (Nemastoma) leiobunum Wankel, 1851 | | | Neoantistea magna Eugen von Ke..., 1887 | | | Neoscona pratensis Hentz, 1847 | | | Neriene clathrata Sundevall, 1830 | | | Orodrassus canadensis Norman I. Pl..., 1975 | | | Orodrassus coloradensis Emerton, 1877 | | | Pachygnatha autumnalis Marx, 1884 | Big-Eyed Thick-Jawed Spider | | Pachygnatha clercki Sundevall, 1823 | | | Pachygnatha dorothea McCook, 1894 | | | Pachygnatha tristriata C. L. Koch, 1845 | | | Pardosa distincta (John Blackwall, 1846) | ⇒ Pardosa hyperborea Thorell, 1872 | | Pardosa dorsuncata Allen Lowrie..., 1981 | | | Pardosa lapidicina (James Henry ..., 1885) | ⇒ Pardosa mercurialis M. E. Montgo..., 1904 | | Pardosa mackenziana Eugen von Ke..., 1877 | | | Pardosa moesta Banks, 1892 | | | Pardosa saxatilis Nicholas Mar..., 1844 | | | Pardosa xerampelina Eugen von Ke..., 1877 | | | Pelegrina arizonensis Peckham & Pe..., 1901 | | | Pelegrina insignis Richard C. B..., 1892 | | | Pelegrina proterva Charles Atha..., 1837 | Common White-Cheeked Jumping Spider | | Phidippus borealis Richard C. B..., 1895 | Boreal Tufted Jumping Spider | | Phidippus purpuratus Eugen von Ke..., 1885 | Marbled Purple Jumping Spider | | Philodromus cespitum Walckenaer, 1802 | | | Philodromus imbecillus Eugen von Ke..., 1880 | | | Philodromus oneida Herbert Walt..., 1951 | Jost Van Dyke's Indian mallow | | Philodromus praelustris Eugen von Ke..., 1880 | | | Philodromus vulgaris Nicholas Mar..., 1847 | | | Pholcus manueli Gertsch, 1937 | Cellar Spider | | Pirata montanus Emerton, 1885 | Dark-Legged Pirate Wolf Spider | | Pirata piraticus (Clerck, 1757) | ⇒ Trebacosa marxi Witmer Stone, 1890 | | Piratula insularis James Henry ..., 1885 | Lonely Wolf Spider | | Pityohyphantes costatus Nicholas Mar..., 1850 | Hammock spider | | Polydiscia deuterosminthurus Baquero, Mor..., 2003 | | | Rhysodromus histrio (Latreille, 1819) | ⇒ Philodromus histrio Latreille, 1819 | | Schizocosa crassipalpata Carl Friedri..., 1951 | San Diego bird's-foot trefoil | | Sergiolus ocellatus Walckenaer, 1837 | | | Sibianor aemulus Gertsch, 1934 | | | Sisicus penifusifer Bishop & Crosby, 1938 | | | Sitticus concolor (Banks, 1895) | ⇒ Sitticus cursor Barrows, 1919 | | Sitticus finschi L. Koch, 1879 | | | Steatoda borealis Nicholas Mar..., 1850 | Boreal Combfoot | | Talavera minuta Richard C. B..., 1895 | | | Tetragnatha caudata Emerton, 1884 | Longjawed Orb Weavers | | Tetragnatha dearmata Thorell, 1873 | | | Tetragnatha extensa (Linnaeus, 1758) | ⇒ Tetragnatha montana Simon, 1874 | | Tetragnatha guatemalensis Octavius Pic..., 1889 | Ants | | Tetragnatha straminea Emerton, 1884 | | | Tetragnatha viridis Walckenaer, 1842 | Green Long-Jawed Spider | | Thanatus formicinus (Clerck, 1758) | ⇒ Thanatus miniaceus Simon, 1880 | | Thanatus striatus C. L. Koch, 1845 | | | Theridion albidum (Richard C. B..., 1895) | ⇒ Theridion berlandi Carl Friedri..., 1942 | | Theridion differens (James Henry ..., 1882) | ⇒ Theridion glaucescens Lawrence Becker, 1879 | | Theridion frondeum Nicholas Mar..., 1850 | Eastern Long-Legged Cobweaver | | Theridion glaucescens Lawrence Becker, 1879 | | | Theridion murarium James Henry ..., 1882 | | | Theridion pictum (Charles Atha..., 1802) | ⇒ Theridion hemerobium Eugène Simon, 1914 | | Theridula emertoni Herbert Walt..., 1954 | Emerton'S Bitubercled Cobweaver | | Theridula opulenta (Charles Atha..., 1842) | ⇒ Theridula gonygaster Eugène Simon, 1873 | | Thymoites unimaculatus James Henry ..., 1882 | | | Tibellus maritimus Menge, 1875 | Goblin shark | | Tmarus angulatus Charles Atha..., 1837 | Tuberculated Crab Spider | | Trochosa ruricola (De Geer, 1778) | ⇒ Trochosa hispanica Eugène Simon, 1870 | | Trochosa terricola Thorell, 1856 | | | Viciria flavipes (Peckham & Pe..., 1903) | ⇒ Viciria diademata Eugène Simon, 1902 | | Walchia (Wenia) isonychia Nadchatram &..., 1964 | | | Xysticus canadensis Willis J. Ge..., 1934 | | | Xysticus elegans Eugen von Ke..., 1880 | Elegant crab spider | | Xysticus emertoni Eugen von Ke..., 1880 | Emerton'S Crab Spider | | Xysticus ferox Nicholas Mar..., 1847 | Tan Crab Spider | | Xysticus fraternus Richard C. B..., 1895 | | | Xysticus luctuosus John Blackwall, 1836 | | | Xysticus obscurus (Collett, 1877) | ⇒ Xysticus rainbowi Embrik Strand, 1901 | | Xysticus pellax O. P.-Cambridge, 1894 | Honey bee | | Xysticus punctatus Eugen von Ke..., 1880 | | | Xysticus triguttatus Keyserling, 1880 | Three-banded Crab Spider | | Yunohamella lyrica Walckenaer, 1842 | | | Zelotes hentzi Barrows, 1945 | | | Zelotes puritanus Chamberlin, 1922 | | | Zygiella nearctica Willis J. Ge..., 1964 | |
Subnodes of Arachnida with occurrences in Polk County (Minnesota)
 | | 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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