Identification
Spiders in this genus are about as long or longer than they are wide. Their chelicerae have two or less teeth on the front edge and none on the back edge. The front leg is the longest in both genders, but the next longest is the second leg in males and the fourth leg in females. The epigyne can vary, but the pedipalp has a median Glossary of spider terms#apophysis, apophysis and a Cribellum#Ancestral trait, colulus is absent from both genders. In several species, the males have mastidia (projections) on the chelicerae. ''Theridion'' has the anterior eye row slightly curved and with a gap between it and the posterior eye row. This distinguishes it from ''Enoplognatha'', another theridiid genus in which the anterior eye row is almost straight and the gap between eye rows is very small.Ecology
''Theridion'' build tangle webs, usually under leaves and among vegetation. At night, spiders hang upside-down in these webs. During the day, they hide close by their webs. ''Philodromus cespitum'', a species of running crab spider, preys on ''Theridion'' spiders in European fruit orchards.Mating
Mating behaviour has been studied in several ''Theridion'' species. It involves pseudocopulation, numerous sperm inductions and copulatory sequences. The male approaches the female to mate, usually in the latter's retreat (a hood-shaped part of the web where the female lives in). Male ''Theridion'' perform contralateral insertions, inserting their left palp into the female's right introductory duct and vice versa for the right palp. Female ''Theridion'' are less aggressive after mating compared to other genera of theridiids.Species
There are almost 600 described species of ''Theridion''. However, the genus has traditionally been assigned species that lack a colulus and did not fit into other genera (wastebasket taxon). New species continue to be described on a regular basis. * ''Theridion abruptum, T. abruptum'' Simon, 1884 — North Africa * ''Theridion accoense, T. accoense'' Levy, 1985 — Israel * ''Theridion acutitarse, T. acutitarse'' Simon, 1900 — Hawaii * ''Theridion adjacens, T. adjacens'' (O. P.-Cambridge, 1896) — Mexico to Panama * ''Theridion adrianopoli, T. adrianopoli'' Drensky, 1915 — Bulgaria, Greece, Crete, Turkey * ''Theridion aeolium, T. aeolium'' Levi, 1963 — USA * ''Theridion agrarium, T. agrarium'' Levi, 1963 — Brazil * ''Theridion agreste, T. agreste'' Nicolet, 1849 — Chile * ''Theridion agrifoliae, T. agrifoliae'' Levi, 1957 — USA, Canada * ''Theridion akme, T. akme'' Levi, 1959 — Panama * ''Theridion akron, T. akron'' Levi, 1959 — Panama * ''Theridion albidorsum, T. albidorsum'' Strand, 1909 — South Africa * ''Theridion albidum, T. albidum'' Banks, 1895 — USA, Canada * ''Theridion albioculum, T. albioculum'' Zhu, 1998 — China * ''Theridion albipes, T. albipes'' L. Koch, 1878 — Russia, Georgia * ''Theridion albocinctum, T. albocinctum'' Urquhart, 1892 — New Zealand * ''Theridion albodecoratum, T. albodecoratum'' William Joseph Rainbow, Rainbow, 1916 — Queensland * ''Theridion albolineatum, T. albolineatum'' Nicolet, 1849 — Chile * ''Theridion albolineolatum, T. albolineolatum'' Caporiacco, 1940 — Ethiopia * ''Theridion albomaculosum, T. albomaculosum'' O. P.-Cambridge, 1869 — Sri Lanka * ''Theridion albopictum, T. albopictum'' Thorell, 1898 — Myanmar * ''Theridion albostriatum, T. albostriatum'' (L. Koch, 1867) — New Guinea, Queensland, Tonga, Norfolk Islands * ''Theridion albulum, T. albulum'' O. P.-Cambridge, 1898 — Panama * ''Theridion altum, T. altum'' Levi, 1963 — Paraguay * ''Theridion amarga, T. amarga'' Levi, 1967 — Chile, Argentina * ''Theridion amatitlan, T. amatitlan'' Levi, 1963 — Guatemala * ''Theridion ambiguum, T. ambiguum'' Nicolet, 1849 — Chile * ''Theridion ampascachi, T. ampascachi'' Mello-Leitão, 1941 — Argentina * ''Theridion ampliatum, T. ampliatum'' Urquhart, 1892 — New Zealand * ''Theridion angusticeps, T. angusticeps'' Caporiacco, 1949 — Kenya * ''Theridion angustifrons, T. angustifrons'' Caporiacco, 1934 — Karakorum * ''Theridion annulipes, T. annulipes'' O. P.-Cambridge, 1869 — Sri Lanka * ''Theridion anson, T. anson'' Levi, 1967 — Juan Fernandez Islands * ''Theridion antillanum, T. antillanum'' Simon, 1894 — West Indies * ''Theridion antron, T. antron'' Levi, 1963 — Brazil * ''Theridion apiculatum, T. apiculatum'' Roewer, 1942 — Queensland * ''Theridion aporum, T. aporum'' Levi, 1963 — Brazil * ''Theridion apostoli, T. apostoli'' Mello-Leitão, 1945 — Argentina * ''Theridion apulco, T. apulco'' Levi, 1959 — Mexico * ''Theridion aragua, T. aragua'' Levi, 1963 — Venezuela * ''Theridion archeri, T. archeri'' Levi, 1959 — Cuba * ''Theridion argentatulum, T. argentatulum'' Roewer, 1942 — New Zealand * ''Theridion arizonense, T. arizonense'' Levi, 1957 — USA * ''Theridion artum, T. artum'' Levi, 1959 — Panama, Trinidad * ''Theridion aruanum, T. aruanum'' Strand, 1911 — Aru Islands * ''Theridion arushae, T. arushae'' Caporiacco, 1947 — Tanzania * ''Theridion asbolodes, T. asbolodes'' Rainbow, 1917 — South Australia * ''Theridion astrigerum, T. astrigerum'' Thorell, 1895 — Myanmar * ''Theridion atratum, T. atratum'' Thorell, 1877 — Sulawesi * ''Theridion attritum, T. attritum'' (Simon, 1908) — Western Australia * ''Theridion auberti, T. auberti'' Simon, 1904 — South Africa * ''Theridion aulos, T. aulos'' Levi, 1963 — Brazil * ''Theridion australe, T. australe'' Banks, 1899 — USA, Mexico, West Indies * ''Theridion baccula, T. baccula'' Thorell, 1887 — Myanmar * ''Theridion baltasarense, T. baltasarense'' Levi, 1963 — Windward Islands * ''Theridion banksi, T. banksi'' Berland, 1920 — East Africa * ''Theridion barbarae, T. barbarae'' Levi, 1959 — Mexico * ''Theridion beebei, T. beebei'' Levi, 1963 — Venezuela * ''Theridion bellatulum, T. bellatulum'' Levi, 1963 — Brazil * ''Theridion bergi, T. bergi'' Levi, 1963 — Brazil, Paraguay, Argentina * ''Theridion berlandi, T. berlandi'' Roewer, 1942 — Samoa * ''Theridion betteni, T. betteni'' Wiehle, 1960 — Palearctic * ''Theridion bicruciatum, T. bicruciatum'' Roewer, 1961 — Senegal * ''Theridion bidepressum, T. bidepressum'' Yin, Peng & Zhang, 2005 — China * ''Theridion biezankoi, T. biezankoi'' Levi, 1963 — Brazil * ''Theridion biforaminum, T. biforaminum'' Gao & Zhu, 1993 — China * ''Theridion biolleyi, T. biolleyi'' Banks, 1909 — Costa Rica * ''Theridion biseriatum, T. biseriatum'' Thorell, 1890 — Sumatra * ''Theridion bitakum, T. bitakum'' Barrion & Litsinger, 1995 — Philippines * ''Theridion blackwalli, T. blackwalli'' O. P.-Cambridge, 1871 — Europe, Russia, Ukraine, North Africa * ''Theridion blaisei, T. blaisei'' Simon, 1909 — Vietnam * ''Theridion boesenbergi, T. boesenbergi'' Strand, 1904 — Europe, Russia, Ukraine * ''Theridion bolivari, T. bolivari'' Levi, 1959 — Mexico * ''Theridion bolum, T. bolum'' Levi, 1963 — Brazil * ''Theridion bomae, T. bomae'' Schmidt, 1957 — Congo * ''Theridion botanicum, T. botanicum'' Levi, 1963 — Venezuela * ''Theridion brachypus, T. brachypus'' Thorell, 1887 — Myanmar * ''Theridion bradyanum, T. bradyanum'' Strand, 1907 — South Africa * ''Theridion brunellii, T. brunellii'' Caporiacco, 1940 — Ethiopia * ''Theridion brunneonigrum, T. brunneonigrum'' Caporiacco, 1949 — Kenya * ''Theridion bryantae, T. bryantae'' Roewer, 1951 — Mexico * ''Theridion bullatum, T. bullatum'' Tullgren, 1910 — Tanzania * ''Theridion buxtoni, T. buxtoni'' Berland, 1929 — Samoa, Henderson Islands, Tuamotu Arch. * ''Theridion calcynatum, T. calcynatum'' Holmberg, 1876 — Venezuela to Argentina * ''Theridion californicum, T. californicum'' Banks, 1904 — USA, Canada * ''Theridion caliginosum, T. caliginosum'' Marples, 1955 — Samoa * ''Theridion cameronense, T. cameronense'' Levi, 1957 — USA, Mexico * ''Theridion campestratum, T. campestratum'' Simon, 1900 — Hawaii * ''Theridion caplandense, T. caplandense'' Strand, 1907 — South Africa * ''Theridion carinatum, T. carinatum'' Yin, Peng & Zhang, 2005 — China * ''Theridion carpathium, T. carpathium'' Brignoli, 1984 — Greece * ''Theridion cassinicola, T. cassinicola'' Simon, 1907 — Guinea-Bissau * ''Theridion castaneum, T. castaneum'' Franganillo, 1931 — Cuba * ''Theridion catharina, T. catharina'' Marples, 1955 — Samoa * ''Theridion cavipalpe, T. cavipalpe'' (F. O. P.-Cambridge, 1902) — Guatemala * ''Theridion cazieri, T. cazieri'' Levi, 1959 — Bahama Islands * ''Theridion centrum, T. centrum'' Levi, 1959 — Panama * ''Theridion chacoense, T. chacoense'' Levi, 1963 — Bolivia * ''Theridion chakinuense, T. chakinuense'' Wunderlich, 1995 — Turkmenistan * ''Theridion chamberlini, T. chamberlini'' Caporiacco, 1949 — Kenya * ''Theridion charitonowi, T. charitonowi'' Caporiacco, 1949 — Kenya * ''Theridion cheimatos, T. cheimatos'' Gertsch & Archer, 1942 — USA * ''Theridion cheni, T. cheni'' Zhu, 1998 — China * ''Theridion chihuahua, T. chihuahua'' Levi, 1959 — Mexico * ''Theridion chiriqui, T. chiriqui'' Levi, 1959 — Panama * ''Theridion chonetum, T. chonetum'' Zhu, 1998 — China * ''Theridion choroni, T. choroni'' Levi, 1963 — Venezuela * ''Theridion cinctipes, T. cinctipes'' Banks, 1898 — USA, Mexico * ''Theridion cinereum, T. cinereum'' Thorell, 1875 — Russia, Ukraine * ''Theridion circumtextum, T. circumtextum'' Simon, 1907 — Guinea-Bissau * ''Theridion climacode, T. climacode'' Thorell, 1898 — Myanmar * ''Theridion clivalum, T. clivalum'' Zhu, 1998 — China * ''Theridion cloxum, T. cloxum'' Roberts, 1983 — Aldabra * ''Theridion clypeatellum, T. clypeatellum'' Tullgren, 1910 — East Africa * ''Theridion cochise, T. cochise'' Levi, 1963 — USA * ''Theridion cochrum, T. cochrum'' Levi, 1963 — Brazil * ''Theridion cocosense, T. cocosense'' Strand, 1906 — Costa Rica * ''Theridion coenosum, T. coenosum'' Thorell, 1887 — Myanmar * ''Theridion cohni, T. cohni'' Levi, 1963 — Brazil * ''Theridion coldeniae, T. coldeniae'' Baert & Maelfait, 1986 — Galapagos Islands * ''Theridion comstocki, T. comstocki'' Berland, 1920 — East Africa * ''Theridion confusum, T. confusum'' O. P.-Cambridge, 1885 — Yarkand * ''Theridion conigerum, T. conigerum'' Simon, 1914 — Europe, Russia * ''Theridion contreras, T. contreras'' Levi, 1959 — Mexico * ''Theridion convexellum, T. convexellum'' Roewer, 1942 — Queensland, New South Wales * ''Theridion convexisternum, T. convexisternum'' Caporiacco, 1949 — Kenya * ''Theridion corcyraeum, T. corcyraeum'' Brignoli, 1984 — Corfu * ''Theridion costaricaense, T. costaricaense'' Levi, 1963 — Costa Rica to Venezuela * ''Theridion cowlesae, T. cowlesae'' Levi, 1957 — USA * ''Theridion coyoacan, T. coyoacan'' Levi, 1959 — Mexico * ''Theridion crinigerum, T. crinigerum'' Simon, 1881 — Corsica, Italy, Morocco, Algeria * ''Theridion cruciferum, T. cruciferum'' Urquhart, 1886 — New Zealand * ''Theridion crucum, T. crucum'' Levi, 1959 — Mexico * ''Theridion cuspulatum, T. cuspulatum'' Schmidt & Krause, 1998 — Cape Verde Islands * ''Theridion cuyutlan, T. cuyutlan'' Levi, 1963 — Mexico * ''Theridion cynicum, T. cynicum'' Gertsch & Mulaik, 1936 — USA, Mexico * ''Theridion dafnense, T. dafnense'' Levy & Amitai, 1982 — Israel * ''Theridion darolense, T. darolense'' Strand, 1906 — Ethiopia * ''Theridion davisorum, T. davisorum'' Levi, 1959 — Mexico * ''Theridion dayongense, T. dayongense'' Zhu, 1998 — China * ''Theridion decemmaculatum, T. decemmaculatum'' Thorell, 1890 — Sumatra * ''Theridion decemperlatum, T. decemperlatum'' (Simon, 1889) — Madagascar * ''Theridion dedux, T. dedux'' O. P.-Cambridge, 1904 — South Africa * ''Theridion delicatum, T. delicatum'' O. P.-Cambridge, 1904 — South Africa * ''Theridion derhami, T. derhami'' Simon, 1895 — Sierra Leone, Gabon, Bioko * ''Theridion diadematum, T. diadematum'' Chrysanthus (arachnologist), Chrysanthus, 1963 — New Guinea * ''Theridion dianiphum, T. dianiphum'' Rainbow, 1916 — Queensland * ''Theridion differens, T. differens'' Emerton, 1882 — USA, Canada * ''Theridion dilucidum, T. dilucidum'' Simon, 1897 — Costa Rica to Venezuela, West Indies * ''Theridion dilutum, T. dilutum'' Levi, 1957 — USA, Mexico * ''Theridion dividuum, T. dividuum'' Gertsch & Archer, 1942 — USA * ''Theridion dominica, T. dominica'' Levi, 1963 — Dominica * ''Theridion dreisbachi, T. dreisbachi'' Levi, 1959 — Mexico * ''Theridion dubium, T. dubium'' Bradley, 1877 — New Guinea * ''Theridion dukouense, T. dukouense'' Zhu, 1998 — China * ''Theridion dulcineum, T. dulcineum'' Gertsch & Archer, 1942 — USA * ''Theridion durbanicum, T. durbanicum'' Lawrence, 1947 — South Africa * ''Theridion ecuadorense, T. ecuadorense'' Levi, 1963 — Ecuador * ''Theridion egyptium, T. egyptium'' Fawzy & El Erksousy, 2002 — Egypt * ''Theridion electum, T. electum'' (O. P.-Cambridge, 1896) — Mexico * ''Theridion elegantissimum, T. elegantissimum'' Roewer, 1942 — Taiwan * ''Theridion elevatum, T. elevatum'' Thorell, 1881 — Queensland * ''Theridion elimatum, T. elimatum'' L. Koch, 1882 — Mallorca * ''Theridion elisabethae, T. elisabethae'' Roewer, 1951 — Mexico * ''Theridion elli, T. elli'' Sedgwick, 1973 — Chile * ''Theridion ellicottense, T. ellicottense'' Dobyns & Bond, 1996 — USA * ''Theridion emertoni, T. emertoni'' Berland, 1920 — East Africa * ''Theridion epiense, T. epiense'' Berland, 1938 — New Hebrides * ''Theridion eremum, T. eremum'' Levi, 1963 — Brazil * ''Theridion eugeni, T. eugeni'' Roewer, 1942 — Bioko * ''Theridion evexum, T. evexum'' Keyserling, 1884 — Mexico, West Indies to Brazil * ''Theridion excavatum, T. excavatum'' F. O. P.-Cambridge, 1902 — Guatemala * ''Theridion exlineae, T. exlineae'' Levi, 1963 — Ecuador, Peru * ''Theridion expallidatum, T. expallidatum'' O. P.-Cambridge, 1885 — Yarkand * ''Theridion familiare, T. familiare'' O. P.-Cambridge, 1871 — Palearctic * ''Theridion fastosum, T. fastosum'' Keyserling, 1884 — Ecuador, Peru * ''Theridion fatuhivaense, T. fatuhivaense'' Berland, 1933 — Marquesas Islands * ''Theridion femorale, T. femorale'' Thorell, 1881 — Queensland * ''Theridion femoratissimum, T. femoratissimum'' Caporiacco, 1949 — Kenya * ''Theridion fernandense, T. fernandense'' Simon, 1907 — Bioko * ''Theridion filum, T. filum'' Levi, 1963 — Brazil * ''Theridion flabelliferum, T. flabelliferum'' Urquhart, 1887 — New Zealand * ''Theridion flavonotatum, T. flavonotatum'' Becker, 1879 — USA, Cuba * ''Theridion flavoornatum, T. flavoornatum'' Thorell, 1898 — Myanmar * ''Theridion fornicatum, T. fornicatum'' Simon, 1884 — Sudan * ''Theridion frio, T. frio'' Levi, 1959 — Mexico * ''Theridion frizzellorum, T. frizzellorum'' Levi, 1963 — Colombia, Ecuador, Venezuela * ''Theridion frondeum, T. frondeum'' Hentz, 1850 — USA, Bahama Islands * ''Theridion fruticum, T. fruticum'' Simon, 1890 — Yemen * ''Theridion fungosum, T. fungosum'' Keyserling, 1886 — Ecuador, Peru * ''Theridion furfuraceum, T. furfuraceum'' Simon, 1914 — France, Algeria, Syria * ''Theridion fuscodecoratum, T. fuscodecoratum'' Rainbow, 1916 — Queensland * ''Theridion fuscomaculatum, T. fuscomaculatum'' Rainbow, 1916 — Queensland * ''Theridion fuscum, T. fuscum'' Franganillo, 1930 — Cuba * ''Theridion gabardi, T. gabardi'' Simon, 1895 — Sri Lanka * ''Theridion galerum, T. galerum'' Levi, 1959 — Panama * ''Theridion gekkonicum, T. gekkonicum'' Levy & Amitai, 1982 — Israel * ''Theridion geminipunctum, T. geminipunctum'' Chamberlin, 1924 — USA, Mexico * ''Theridion genistae, T. genistae'' Simon, 1873 — Western Mediterranean to Uzbekistan ** ''T. genistae turanicum'' Charitonov, 1946 — Uzbekistan * ''Theridion gentile, T. gentile'' Simon, 1881 — Corsica, Algeria * ''Theridion gertschi, T. gertschi'' Levi, 1959 — USA, Mexico * ''Theridion gibbum, T. gibbum'' Rainbow, 1916 — Queensland * ''Theridion gigantipes, T. gigantipes'' Keyserling, 1890 — New South Wales, Victoria * ''Theridion giraulti, T. giraulti'' Rainbow, 1916 — Queensland * ''Theridion glaciale, T. glaciale'' Caporiacco, 1934 — Karakorum * ''Theridion glaucescens, T. glaucescens'' Becker, 1879 — USA, Canada * ''Theridion glaucinum, T. glaucinum'' Simon, 1881 — France * ''Theridion goodnightorum, T. goodnightorum'' Levi, 1957 — USA, Mexico * ''Theridion gracilipes, T. gracilipes'' Urquhart, 1889 — New Zealand * ''Theridion grallator, T. grallator'' Simon, 1900 — Hawaii * ''Theridion gramineum, T. gramineum'' Zhu, 1998 — China * ''Theridion grammatophorum, T. grammatophorum'' Simon, 1909 — Vietnam * ''Theridion grancanariense, T. grancanariense'' Wunderlich, 1987 — Canary Islands * ''Theridion grandiosum, T. grandiosum'' Levi, 1963 — Peru * ''Theridion grecia, T. grecia'' Levi, 1959 — Mexico to Venezuela * ''Theridion gyirongense, T. gyirongense'' Hu & Li, 1987 — China * ''Theridion hainenense, T. hainenense'' Zhu, 1998 — China * ''Theridion haleakalense, T. haleakalense'' Simon, 1900 — Hawaii * ''Theridion hannoniae, T. hannoniae'' Denis, 1944 — Europe, North Africa, Madeira, Canary Islands * ''Theridion hartmeyeri, T. hartmeyeri'' Simon, 1908 — Western Australia * ''Theridion hassleri, T. hassleri'' Levi, 1963 — Hispaniola * ''Theridion hebridisianum, T. hebridisianum'' Berland, 1938 — New Hebrides * ''Theridion helophorum, T. helophorum'' Thorell, 1895 — Java * ''Theridion hemerobium, T. hemerobium'' Simon, 1914 — USA, Canada, Europe * ''Theridion hermonense, T. hermonense'' Levy, 1991 — Israel * ''Theridion hewitti, T. hewitti'' Caporiacco, 1949 — Ethiopia * ''Theridion hidalgo, T. hidalgo'' Levi, 1957 — USA, Mexico * ''Theridion hierichonticum, T. hierichonticum'' Levy & Amitai, 1982 — Israel * ''Theridion hispidum, T. hispidum'' O. P.-Cambridge, 1898 — Mexico, West Indies to Paraguay * ''Theridion histrionicum, T. histrionicum'' Thorell, 1875 — Balkans * ''Theridion hondurense, T. hondurense'' Levi, 1959 — Honduras * ''Theridion hopkinsi, T. hopkinsi'' Berland, 1929 — Samoa * ''Theridion hotanense, T. hotanense'' Zhu & Zhou, 1993 — China * ''Theridion huanuco, T. huanuco'' Levi, 1963 — Peru * ''Theridion hufengensis, T. hufengensis'' Tang, Yin & Peng, 2005 — China * ''Theridion hui, T. hui'' Zhu, 1998 — China * ''Theridion humboldti, T. humboldti'' Levi, 1967 — Peru * ''Theridion hummeli, T. hummeli'' Schenkel, 1936 — China * ''Theridion idiotypum, T. idiotypum'' Rainbow, 1917 — South Australia * ''Theridion illecebrosum, T. illecebrosum'' Simon, 1886 — Senegal * ''Theridion impegrum, T. impegrum'' Keyserling, 1886 — Brazil * ''Theridion impressithorax, T. impressithorax'' Simon, 1895 — Philippines * ''Theridion incanescens, T. incanescens'' Simon, 1890 — Yemen * ''Theridion incertissimum, T. incertissimum'' (Caporiacco, 1954) — French Guiana, Brazil * ''Theridion incertum, T. incertum'' O. P.-Cambridge, 1885 — India * ''Theridion incomtum, T. incomtum'' (O. P.-Cambridge, 1896) — Guatemala * ''Theridion inconspicuum, T. inconspicuum'' Thorell, 1898 — Myanmar * ''Theridion indicum, T. indicum'' Tikader, 1977 — Andaman Islands * ''Theridion innocuum, T. innocuum'' Thorell, 1875 — Russia, Ukraine * ''Theridion inquinatum, T. inquinatum'' Thorell, 1878 — Myanmar, Singapore, Amboina ** ''T. inquinatum continentale'' Strand, 1907 — China * ''Theridion insignitarse, T. insignitarse'' Simon, 1907 — Gabon * ''Theridion intritum, T. intritum'' (Bishop & Crosby, 1926) — USA * ''Theridion iramon, T. iramon'' Levi, 1963 — Colombia, Ecuador * ''Theridion ischagosum, T. ischagosum'' Barrion & Litsinger, 1995 — Philippines * ''Theridion isorium, T. isorium'' Levi, 1963 — Peru * ''Theridion istokpoga, T. istokpoga'' Levi, 1957 — USA to Panama * ''Theridion italiense, T. italiense'' Wunderlich, 1995 — Italy * ''Theridion jordanense, T. jordanense'' Levy & Amitai, 1982 — Israel * ''Theridion kambalum, T. kambalum'' Barrion & Litsinger, 1995 — Philippines * ''Theridion karamayense, T. karamayense'' Zhu, 1998 — China * ''Theridion kauaiense, T. kauaiense'' Simon, 1900 — Hawaii * ''Theridion kawea, T. kawea'' Levi, 1957 — USA, Mexico * ''Theridion kibonotense, T. kibonotense'' Tullgren, 1910 — East Africa * ''Theridion kiliani, T. kiliani'' Müller & Heimer, 1990 — Colombia * ''Theridion kobrooricum, T. kobrooricum'' Strand, 1911 — Aru Islands * ''Theridion kochi, T. kochi'' Roewer, 1942 — Samoa * ''Theridion kollari, T. kollari'' Doleschall, 1852 — Austria * ''Theridion kraepelini, T. kraepelini'' Simon, 1905 — Java * ''Theridion kraussi, T. kraussi'' Marples, 1957 — Fiji * ''Theridion lacticolor, T. lacticolor'' Berland, 1920 — Kenya, Yemen, Madagascar * ''Theridion laevigatum, T. laevigatum'' Blackwall, 1870 — Italy * ''Theridion lago, T. lago'' Levi, 1963 — Ecuador * ''Theridion lamperti, T. lamperti'' Strand, 1906 — Ethiopia * ''Theridion lanceatum, T. lanceatum'' Zhang & Zhu, 2007 — China * ''Theridion lapidicola, T. lapidicola'' Kulczynski, 1887 — Italy * ''Theridion latisternum, T. latisternum'' Caporiacco, 1934 — Karakorum * ''Theridion lawrencei, T. lawrencei'' Gertsch & Archer, 1942 — USA * ''Theridion leechi, T. leechi'' Gertsch & Archer, 1942 — USA, Canada * ''Theridion leguiai, T. leguiai'' Chamberlin, 1916 — Colombia, Peru * ''Theridion lenzianum, T. lenzianum'' Strand, 1907 — South Africa * ''Theridion leones, T. leones'' Levi, 1959 — Mexico * ''Theridion leucophaeum, T. leucophaeum'' Simon, 1905 — India * ''Theridion leve, T. leve'' Blackwall, 1877 — Seychelles * ''Theridion leviorum, T. leviorum'' Gertsch & Susan Riechert, Riechert, 1976 — USA * ''Theridion liaoyuanense, T. liaoyuanense'' (Zhu & Yu, 1982) — China * ''Theridion limatum, T. limatum'' Tullgren, 1910 — Tanzania * ''Theridion limitatum, T. limitatum'' L. Koch, 1872 — Queensland, New South Wales * ''Theridion linaresense, T. linaresense'' Levi, 1963 — Chile * ''Theridion linzhiense, T. linzhiense'' Hu, 2001 — China * ''Theridion llano, T. llano'' Levi, 1957 — USA * ''Theridion lomirae, T. lomirae'' Roewer, 1938 — New Guinea * ''Theridion logan, T. logan'' Levi and Patrick, 2013 — USA * ''Theridion longicrure, T. longicrure'' Marples, 1956 — New Zealand * ''Theridion longihirsutum, T. longihirsutum'' Strand, 1907 — China * ''Theridion longipalpum, T. longipalpum'' Zhu, 1998 — China, Korea * ''Theridion longipedatum, T. longipedatum'' Roewer, 1942 — Colombia * ''Theridion ludekingi, T. ludekingi'' Thorell, 1890 — Java * ''Theridion ludius, T. ludius'' Simon, 1880 — Malaysia to Australia, New Caledonia * ''Theridion lumabani, T. lumabani'' Barrion & Litsinger, 1995 — Philippines * ''Theridion luteitarse, T. luteitarse'' Schmidt & Krause, 1995 — Cape Verde Islands * ''Theridion macei, T. macei'' Simon, 1895 — Congo * ''Theridion machu, T. machu'' Levi, 1963 — Peru * ''Theridion macropora, T. macropora'' Tang, Yin & Peng, 2006 — China * ''Theridion macuchi, T. macuchi'' Levi, 1963 — Ecuador * ''Theridion maculiferum, T. maculiferum'' Roewer, 1942 — Zanzibar * ''Theridion magdalenense, T. magdalenense'' Müller & Heimer, 1990 — Colombia * ''Theridion maindroni, T. maindroni'' Simon, 1905 — India * ''Theridion manjithar, T. manjithar'' Tikader, 1970 — India * ''Theridion manonoense, T. manonoense'' Marples, 1955 — Samoa * ''Theridion maranum, T. maranum'' Levi, 1963 — Venezuela * ''Theridion maron, T. maron'' Levi, 1963 — Paraguay * ''Theridion martini, T. martini'' Levi, 1959 — Mexico * ''Theridion mataafa, T. mataafa'' Marples, 1955 — Samoa * ''Theridion mauense, T. mauense'' Caporiacco, 1949 — Kenya * ''Theridion mauiense, T. mauiense'' Simon, 1900 — Hawaii * ''Theridion mehlum, T. mehlum'' Roberts, 1983 — Aldabra * ''Theridion melanoplax, T. melanoplax'' Schmidt & Krause, 1996 — Canary Islands * ''Theridion melanoprorum, T. melanoprorum'' Thorell, 1895 — Myanmar ** ''T. melanoprorum orientale'' Simon, 1909 — Vietnam * ''Theridion melanosternon, T. melanosternon'' Mello-Leitão, 1947 — Brazil * ''Theridion melanostictum, T. melanostictum'' O. P.-Cambridge, 1876 — Mediterranean, Aldabra, Seychelles, China, Japan, USA, Hispaniola * ''Theridion melanurum, T. melanurum'' Hahn, 1831 — Holarctic, Azores * ''Theridion melinum, T. melinum'' Simon, 1900 — Hawaii * ''Theridion mendozae, T. mendozae'' Berland, 1933 — Marquesas Islands * ''Theridion meneghettii, T. meneghettii'' Caporiacco, 1949 — Kenya * ''Theridion metabolum, T. metabolum'' Chamberlin & Ivie, 1936 — Panama * ''Theridion metator, T. metator'' Simon, 1907 — Guinea-Bissau * ''Theridion michelbacheri, T. michelbacheri'' Levi, 1957 — USA * ''Theridion micheneri, T. micheneri'' Levi, 1963 — Panama * ''Theridion minutissimum, T. minutissimum'' Keyserling, 1884 — Panama, Peru * ''Theridion minutulum, T. minutulum'' Thorell, 1895 — Myanmar * ''Theridion miserum, T. miserum'' Thorell, 1898 — Myanmar * ''Theridion modestum, T. modestum'' (Simon, 1894) — Sri Lanka * ''Theridion molliculum, T. molliculum'' Thorell, 1899 — Cameroon * ''Theridion mollissimum, T. mollissimum'' L. Koch, 1872 — Australia, Samoa * ''Theridion montanum, T. montanum'' Emerton, 1882 — USA, Canada, Alaska, Norway, Finland, Russia * ''Theridion monzonense, T. monzonense'' Levi, 1963 — Peru * ''Theridion mortuale, T. mortuale'' Simon, 1908 — Western Australia * ''Theridion morulum, T. morulum'' O. P.-Cambridge, 1898 — USA, Mexico * ''Theridion murarium, T. murarium'' Emerton, 1882 — North America * ''Theridion musivivoides, T. musivivoides'' Schmidt & Krause, 1995 — Cape Verde Islands * ''Theridion musivivum, T. musivivum'' Schmidt, 1956 — Canary Islands * ''Theridion musivum, T. musivum'' Simon, 1873 — Mediterranean * ''Theridion myersi, T. myersi'' Levi, 1957 — USA, Mexico, Jamaica * ''Theridion mystaceum, T. mystaceum'' L. Koch, 1870 — Palearctic * ''Theridion mysteriosum, T. mysteriosum'' Schmidt, 1971 — Ecuador * ''Theridion nadleri, T. nadleri'' Levi, 1959 — Trinidad * ''Theridion nagorum, T. nagorum'' Roberts, 1983 — Aldabra * ''Theridion nasinotum, T. nasinotum'' Caporiacco, 1949 — Kenya * ''Theridion nasutum, T. nasutum'' Wunderlich, 1995 — Sardinia * ''Theridion necijaense, T. necijaense'' Barrion & Litsinger, 1995 — Philippines * ''Theridion negebense, T. negebense'' Levy & Amitai, 1982 — Israel * ''Theridion neomexicanum, T. neomexicanum'' Banks, 1901 — USA, Canada * ''Theridion neshamini, T. neshamini'' Levi, 1957 — USA * ''Theridion nesticum, T. nesticum'' Levi, 1963 — Trinidad * ''Theridion nigriceps, T. nigriceps'' Keyserling, 1891 — Brazil * ''Theridion nigroannulatum, T. nigroannulatum'' Keyserling, 1884 — Ecuador, Peru * ''Theridion nigroplagiatum, T. nigroplagiatum'' Caporiacco, 1949 — Kenya * ''Theridion nigropunctatum, T. nigropunctatum'' Lucas, 1846 — Mediterranean * ''Theridion nigropunctulatum, T. nigropunctulatum'' Thorell, 1898 — Myanmar * ''Theridion nigrosacculatum, T. nigrosacculatum'' Tullgren, 1910 — Tanzania * ''Theridion nigrovariegatum, T. nigrovariegatum'' Simon, 1873 — Palearctic * ''Theridion pierre, T. pierre'' Levi and Patrick, 2013 — USA * ''Theridion nilgherinum, T. nilgherinum'' Simon, 1905 — India * ''Theridion niphocosmum, T. niphocosmum'' Rainbow, 1916 — Queensland * ''Theridion niveopunctatum, T. niveopunctatum'' Thorell, 1898 — Myanmar * ''Theridion niveum, T. niveum'' O. P.-Cambridge, 1898 — Mexico * ''Theridion nivosum, T. nivosum'' Rainbow, 1916 — Queensland * ''Theridion nodiferum, T. nodiferum'' Simon, 1895 — Sri Lanka * ''Theridion nojimai, T. nojimai'' Yoshida, 1999 — Japan * ''Theridion nudum, T. nudum'' Levi, 1959 — Mexico, Panama * ''Theridion oatesi, T. oatesi'' Thorell, 1895 — Myanmar * ''Theridion obscuratum, T. obscuratum'' Zhu, 1998 — China * ''Theridion ochreolum, T. ochreolum'' Levy & Amitai, 1982 — Israel * ''Theridion octoferum, T. octoferum'' Strand, 1909 — South Africa * ''Theridion odoratum, T. odoratum'' Zhu, 1998 — China * ''Theridion ohlerti, T. ohlerti'' Thorell, 1870 — Holarctic ** ''T. ohlerti lundbecki'' Sørensen, 1898 — Greenland * ''Theridion olaup, T. olaup'' Levi, 1963 — Brazil * ''Theridion omiltemi, T. omiltemi'' Levi, 1959 — Mexico, Guatemala * ''Theridion onticolum, T. onticolum'' Levi, 1963 — Peru * ''Theridion opolon, T. opolon'' Levi, 1963 — Brazil * ''Theridion opuntia, T. opuntia'' Levi, 1963 — Mexico * ''Theridion orgea, T. orgea'' (Levi, 1967) — Brazil * ''Theridion orlando, T. orlando'' (Archer, 1950) — USA * ''Theridion osprum, T. osprum'' Levi, 1963 — Venezuela * ''Theridion oswaldocruzi, T. oswaldocruzi'' Levi, 1963 — Brazil * ''Theridion otsospotum, T. otsospotum'' Barrion & Litsinger, 1995 — Philippines * ''Theridion palanum, T. palanum'' Roberts, 1983 — Aldabra * ''Theridion palgongense, T. palgongense'' Paik, 1996 — Korea * ''Theridion pallidulum, T. pallidulum'' Roewer, 1942 — East Africa * ''Theridion palmgreni, T. palmgreni'' Marusik & Tsellarius, 1986 — Finland, Poland, Estonia, Russia * ''Theridion pandani, T. pandani'' Simon, 1895 — Cambodia * ''Theridion panganii, T. panganii'' Caporiacco, 1947 — Tanzania * ''Theridion paraense, T. paraense'' Levi, 1963 — Brazil * ''Theridion parvulum, T. parvulum'' Blackwall, 1870 — Sicily * ''Theridion parvum, T. parvum'' Keyserling, 1884 — Peru * ''Theridion patrizii, T. patrizii'' Caporiacco, 1933 — Libya * ''Theridion pelaezi, T. pelaezi'' Levi, 1963 — Mexico * ''Theridion pennsylvanicum, T. pennsylvanicum'' Emerton, 1913 — USA, Canada * ''Theridion perkinsi, T. perkinsi'' Simon, 1900 — Hawaii * ''Theridion pernambucum, T. pernambucum'' Levi, 1963 — Brazil * ''Theridion perpusillum, T. perpusillum'' Simon, 1885 — Malaysia * ''Theridion petraeum, T. petraeum'' L. Koch, 1872 — Holarctic * ''Theridion petrunkevitchi, T. petrunkevitchi'' Berland, 1920 — East Africa * ''Theridion phaeostomum, T. phaeostomum'' Simon, 1909 — Vietnam * ''Theridion pictum, T. pictum'' (Walckenaer, 1802) — Holarctic * ''Theridion pigrum, T. pigrum'' Keyserling, 1886 — Brazil * ''Theridion pilatum, T. pilatum'' Urquhart, 1893 — Tasmania * ''Theridion piligerum, T. piligerum'' Frauenfeld, 1867 — Nicobar Islands * ''Theridion piliphilum, T. piliphilum'' Strand, 1907 — South Africa * ''Theridion pinastri, T. pinastri'' L. Koch, 1872 — Palearctic * ''Theridion pinguiculum, T. pinguiculum'' Simon, 1909 — Vietnam * ''Theridion pinicola, T. pinicola'' Simon, 1873 — Corsica * ''Theridion pires, T. pires'' Levi, 1963 — Brazil * ''Theridion piriforme, T. piriforme'' Berland, 1938 — New Hebrides * ''Theridion plaumanni, T. plaumanni'' Levi, 1963 — Venezuela, Brazil * ''Theridion plectile, T. plectile'' Simon, 1909 — Vietnam * ''Theridion plumipes, T. plumipes'' Hasselt, 1882 — Sumatra * ''Theridion pluviale, T. pluviale'' Tullgren, 1910 — Tanzania * ''Theridion poecilum, T. poecilum'' Zhu, 1998 — China * ''Theridion porphyreticum, T. porphyreticum'' Urquhart, 1889 — New Zealand * ''Theridion positivum, T. positivum'' Chamberlin, 1924 — USA, West Indies to Paraguay * ''Theridion posticatum, T. posticatum'' Simon, 1900 — Hawaii * ''Theridion postmarginatum, T. postmarginatum'' Tullgren, 1910 — Tanzania * ''Theridion praeclusum, T. praeclusum'' Tullgren, 1910 — Tanzania * ''Theridion praemite, T. praemite'' Simon, 1907 — Sierra Leone * ''Theridion praetextum, T. praetextum'' Simon, 1900 — Hawaii ** ''T. praetextum concolor'' Simon, 1900 — Hawaii * ''Theridion prominens, T. prominens'' Blackwall, 1870 — Italy * ''Theridion proximum, T. proximum'' Lawrence, 1964 — South Africa * ''Theridion puellae, T. puellae'' Locket, 1980 — Comoro Islands * ''Theridion pulanense, T. pulanense'' Hu, 2001 — China * ''Theridion pumilio, T. pumilio'' Urquhart, 1886 — New Zealand * ''Theridion punctipes, T. punctipes'' Emerton, 1924 — USA, Mexico * ''Theridion punicapunctatum, T. punicapunctatum'' Urquhart, 1891 — New Zealand * ''Theridion punongpalayum, T. punongpalayum'' Barrion & Litsinger, 1995 — Philippines * ''Theridion purcelli, T. purcelli'' O. P.-Cambridge, 1904 — St. Helena, South Africa * ''Theridion pyramidale, T. pyramidale'' L. Koch, 1867 — Queensland, New South Wales * ''Theridion pyrenaeum, T. pyrenaeum'' Denis, 1944 — Spain, Andorra * ''Theridion qingzangense, T. qingzangense'' Hu, 2001 — China * ''Theridion quadratum, T. quadratum'' (O. P.-Cambridge, 1882) — Sri Lanka, Sumatra * ''Theridion quadrilineatum, T. quadrilineatum'' Lenz, 1886 — Madagascar * ''Theridion quadripapulatum, T. quadripapulatum'' Thorell, 1895 — Myanmar * ''Theridion quadripartitum, T. quadripartitum'' Keyserling, 1891 — Brazil * ''Theridion rabuni, T. rabuni'' Chamberlin & Ivie, 1944 — USA, Bahama Islands * ''Theridion rafflesi, T. rafflesi'' Simon, 1899 — Sumatra * ''Theridion rampum, T. rampum'' Levi, 1963 — Peru, Venezuela * ''Theridion ravum, T. ravum'' Levi, 1963 — Venezuela * ''Theridion refugum, T. refugum'' Drensky, 1929 — Austria, Balkans, Bulgaria, Greece, Russia * ''Theridion reinhardti, T. reinhardti'' Charitonov, 1946 — Uzbekistan * ''Theridion resum, T. resum'' Levi, 1959 — Panama * ''Theridion retreatense, T. retreatense'' Strand, 1909 — South Africa * ''Theridion retrocitum, T. retrocitum'' Simon, 1909 — Vietnam * ''Theridion rhodonotum, T. rhodonotum'' Simon, 1909 — Vietnam * ''Theridion ricense, T. ricense'' Levi, 1959 — Puerto Rico * ''Theridion rossi, T. rossi'' Levi, 1963 — Peru * ''Theridion rostriferum, T. rostriferum'' Simon, 1895 — West Africa * ''Theridion rothi, T. rothi'' Levi, 1959 — Mexico * ''Theridion rubiginosum, T. rubiginosum'' Keyserling, 1884 — Brazil * ''Theridion rubrum, T. rubrum'' (Keyserling, 1886) — Brazil * ''Theridion rurrenabaque, T. rurrenabaque'' Levi, 1963 — Bolivia * ''Theridion ruwenzoricola, T. ruwenzoricola'' Strand, 1913 — Central Africa * ''Theridion saanichum, T. saanichum'' Chamberlin & Ivie, 1947 — USA, Canada, Alaska * ''Theridion sabinjonis, T. sabinjonis'' Strand, 1913 — Central Africa * ''Theridion sadani, T. sadani'' Monga & Singh, 1989 — India * ''Theridion samoense, T. samoense'' Berland, 1929 — Samoa * ''Theridion sanctum, T. sanctum'' Levi, 1959 — Mexico * ''Theridion sangzhiense, T. sangzhiense'' Zhu, 1998 — China * ''Theridion sardis, T. sardis'' Chamberlin & Ivie, 1944 — USA * ''Theridion saropus, T. saropus'' Thorell, 1887 — Myanmar * ''Theridion schlingeri, T. schlingeri'' Levi, 1963 — Peru * ''Theridion schrammeli, T. schrammeli'' Levi, 1963 — Mexico * ''Theridion sciaphilum, T. sciaphilum'' Benoit, 1977 — St. Helena * ''Theridion semitinctum, T. semitinctum'' Simon, 1914 — Spain, France, Balearic is. * ''Theridion senckenbergi, T. senckenbergi'' Levi, 1963 — Venezuela * ''Theridion septempunctatum, T. septempunctatum'' Berland, 1933 — Marquesas Islands * ''Theridion serpatusum, T. serpatusum'' Guan & Zhu, 1993 — China * ''Theridion sertatum, T. sertatum'' Simon, 1909 — Vietnam * ''Theridion setiferum, T. setiferum'' Roewer, 1942 — Myanmar * ''Theridion setosum, T. setosum'' L. Koch, 1872 — Queensland, New Hebrides, Samoa, New Caledonia * ''Theridion setum, T. setum'' Zhu, 1998 — China * ''Theridion seximaculatum, T. seximaculatum'' Zhu, 1998 — China * ''Theridion sibiricum, T. sibiricum'' Marusik, 1988 — Russia, Mongolia * ''Theridion sinaloa, T. sinaloa'' Levi, 1959 — Mexico * ''Theridion sisyphium, T. sisyphium'' (Clerck, 1757) — Palearctic ** ''T. sisyphium foliiferum'' Thorell, 1875 — Spain ** ''T. sisyphium torandae'' Strand, 1917 — Yarkand, Karakorum * ''Theridion soaresi, T. soaresi'' Levi, 1963 — Brazil * ''Theridion societatis, T. societatis'' Berland, 1934 — Tahiti * ''Theridion solium, T. solium'' Benoit, 1977 — St. Helena * ''Theridion spinigerum, T. spinigerum'' Rainbow, 1916 — Queensland * ''Theridion spinitarse, T. spinitarse'' O. P.-Cambridge, 1876 — North Africa * ''Theridion spinosissimum, T. spinosissimum'' Caporiacco, 1934 — Karakorum * ''Theridion squalidum, T. squalidum'' Urquhart, 1886 — New Zealand * ''Theridion stamotum, T. stamotum'' Levi, 1963 — Venezuela * ''Theridion stannardi, T. stannardi'' Levi, 1963 — Mexico * ''Theridion strepitus, T. strepitus'' Peck & Shear, 1987 — Galapagos Islands * ''Theridion striatum, T. striatum'' Keyserling, 1884 — Brazil * ''Theridion styligerum, T. styligerum'' F. O. P.-Cambridge, 1902 — Mexico, Guatemala * ''Theridion subitum, T. subitum'' O. P.-Cambridge, 1885 — India * ''Theridion submirabile, T. submirabile'' Zhu & Song, 1993 — China, Korea * ''Theridion submissum, T. submissum'' Gertsch & Davis, 1936 — USA, Mexico, Bahama Islands, Jamaica * ''Theridion subpingue, T. subpingue'' Simon, 1908 — Western Australia * ''Theridion subradiatum, T. subradiatum'' Simon, 1901 — Malaysia * ''Theridion subrotundum, T. subrotundum'' Keyserling, 1891 — Brazil * ''Theridion subvittatum, T. subvittatum'' Simon, 1889 — India * ''Theridion sulawesiense, T. sulawesiense'' Marusik & Penney, 2005 — Sulawesi * ''Theridion swarczewskii, T. swarczewskii'' Wierzbicki, 1902 — Azerbaijan * ''Theridion taegense, T. taegense'' Paik, 1996 — Korea * ''Theridion tahitiae, T. tahitiae'' Berland, 1934 — Tahiti * ''Theridion tamerlani, T. tamerlani'' Roewer, 1942 — Myanmar * ''Theridion tayrona, T. tayrona'' Müller & Heimer, 1990 — Colombia * ''Theridion tebanum, T. tebanum'' Levi, 1963 — Venezuela * ''Theridion teliferum, T. teliferum'' Simon, 1895 — Sri Lanka * ''Theridion tenellum, T. tenellum'' C. L. Koch, 1841 — Greece * ''Theridion tenuissimum, T. tenuissimum'' Thorell, 1898 — Myanmar * ''Theridion teresae, T. teresae'' Levi, 1963 — Brazil * ''Theridion tessellatum, T. tessellatum'' Thorell, 1899 — Cameroon * ''Theridion teutanoides, T. teutanoides'' Caporiacco, 1949 — Kenya * ''Theridion thaleri, T. thaleri'' Marusik, 1988 — Russia * ''Theridion thalia, T. thalia'' Workman, 1878 — Myanmar * ''Theridion theridioides, T. theridioides'' (Keyserling, 1890) — China, Queensland, New South Wales * ''Theridion thorelli, T. thorelli'' L. Koch, 1865 — New South Wales * ''Theridion tigrae, T. tigrae'' Esyunin & Efimik, 1996 — Russia * ''Theridion tikaderi, T. tikaderi'' Patel, 1973 — India * ''Theridion timpanogos, T. timpanogos'' Levi, 1957 — USA * ''Theridion tinctorium, T. tinctorium'' Keyserling, 1891 — Brazil * ''Theridion t, T. t-notatum'' Thorell, 1895 — Myanmar, Singapore * ''Theridion todinum, T. todinum'' Simon, 1880 — New Caledonia * ''Theridion topo, T. topo'' Levi, 1963 — Ecuador * ''Theridion torosum, T. torosum'' Keyserling, 1884 — Peru * ''Theridion trahax, T. trahax'' Blackwall, 1866 — Africa * ''Theridion transgressum, T. transgressum'' Petrunkevitch, 1911 — USA, Mexico * ''Theridion trepidum, T. trepidum'' O. P.-Cambridge, 1898 — Mexico to Panama * ''Theridion triangulare, T. triangulare'' Franganillo, 1936 — Cuba * ''Theridion trifile, T. trifile'' Simon, 1907 — West, East Africa * ''Theridion trigonicum, T. trigonicum'' Thorell, 1890 — Sumatra, Java * ''Theridion tristani, T. tristani'' Levi, 1959 — Costa Rica * ''Theridion triviale, T. triviale'' Thorell, 1881 — Australia * ''Theridion trizonatum, T. trizonatum'' Caporiacco, 1949 — Kenya * ''Theridion tubicola, T. tubicola'' Doleschall, 1859 — Java, Moluccas, New Guinea * ''Theridion tungurahua, T. tungurahua'' Levi, 1963 — Venezuela, Ecuador, Brazil * ''Theridion turrialba, T. turrialba'' Levi, 1959 — Costa Rica * ''Theridion uber, T. uber'' Keyserling, 1884 — Brazil * ''Theridion uhligi, T. uhligi'' Martin, 1974 — Europe * ''Theridion umbilicus, T. umbilicus'' Levi, 1963 — Brazil * ''Theridion uncatum, T. uncatum'' F. O. P.-Cambridge, 1902 — Mexico * ''Theridion undatum, T. undatum'' Zhu, 1998 — China * ''Theridion undulanotum, T. undulanotum'' Roewer, 1942 — New Hebrides * ''Theridion urnigerum, T. urnigerum'' Thorell, 1898 — Myanmar * ''Theridion ursoi, T. ursoi'' Caporiacco, 1947 — Ethiopia * ''Theridion urucum, T. urucum'' Levi, 1963 — Brazil * ''Theridion usitum, T. usitum'' Strand, 1913 — Central Africa * ''Theridion utcuyacu, T. utcuyacu'' Levi, 1963 — Peru * ''Theridion valleculum, T. valleculum'' Levi, 1959 — Panama * ''Theridion vallisalinarum, T. vallisalinarum'' Levy & Amitai, 1982 — Israel * ''Theridion vanhoeffeni, T. vanhoeffeni'' Strand, 1909 — South Africa * ''Theridion varians, T. varians'' Hahn, 1833 — Holarctic ** ''T. varians cyrenaicum'' Caporiacco, 1933 — Libya ** ''T. varians melanotum'' Strand, 1907 — Germany ** ''T. varians rusticum'' Simon, 1873 — Western Mediterranean * ''Theridion ventricosum, T. ventricosum'' Rainbow, 1916 — Queensland * ''Theridion vespertinum, T. vespertinum'' Levy, 1985 — Israel * ''Theridion viridanum, T. viridanum'' Urquhart, 1887 — New Zealand * ''Theridion volubile, T. volubile'' Keyserling, 1884 — Venezuela, Ecuador, Peru * ''Theridion vosserleri, T. vosserleri'' Strand, 1907 — East Africa * ''Theridion vossi, T. vossi'' Strand, 1907 — Cameroon * ''Theridion vossioni, T. vossioni'' Simon, 1884 — Sudan * ''Theridion vulvum, T. vulvum'' Levi, 1959 — Panama * ''Theridion weberi, T. weberi'' Thorell, 1892 — Singapore * ''Theridion weyrauchi, T. weyrauchi'' Levi, 1963 — Peru * ''Theridion whitcombi, T. whitcombi'' Sedgwick, 1973 — Chile * ''Theridion wiehlei, T. wiehlei'' Schenkel, 1938 — Spain, France, Algeria * ''Theridion workmani, T. workmani'' Thorell, 1887 — Myanmar * ''Theridion xianfengense, T. xianfengense'' Zhu & Song, 1992 — China, Taiwan * ''Theridion xinjiangense, T. xinjiangense'' (Hu & Wu, 1989) — China * ''Theridion yani, T. yani'' Zhu, 1998 — China * ''Theridion yuma, T. yuma'' Levi, 1963 — USA * ''Theridion yunnanense, T. yunnanense'' Schenkel, 1963 — China * ''Theridion zantholabio, T. zantholabio'' Urquhart, 1886 — New Zealand * ''Theridion zebra, T. zebra'' Caporiacco, 1949 — Kenya * ''Theridion zebrinum, T. zebrinum'' Zhu, 1998 — China * ''Theridion zekharya, T. zekharya'' Levy, 2007 — Israel * ''Theridion zhangmuense, T. zhangmuense'' Hu, 2001 — China * ''Theridion zhaoi, T. zhaoi'' Zhu, 1998 — China * ''Theridion zhoui, T. zhoui'' Zhu, 1998 — China * ''Theridion zonarium, T. zonarium'' Keyserling, 1884 — Peru * ''Theridion zonatum, T. zonatum'' Eydoux & Souleyet, 1841 — Unknown * ''Theridion zonulatum, T. zonulatum'' Thorell, 1890 — SumatraReferences
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