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Anelosimus

Anelosimus is a cosmopolitan genus of cobweb spiders (Theridiidae), currently containing 74 species. Anelosimus is a key group in the study of sociality and its evolution in spiders. It contains species spanning the spectrum from solitary to highly social (quasisocial), with eight quasisocial species, far more than any other spider genus. Among these is the South American social species Anelosimus eximius, among the best studied social spider species.

Description
Anelosimus spiders have a notched red or brown band on their abdomen, which is dark when preserved in alcohol. Laterally, the abdomen has a white band and/or white blotches. Specimens range in size from . Individuals in this genus lack a colulus. ==Species==
Species
Anelosimus.exiguus.female.-.tanikawa.jpg|right|Female A. exiguus Anelosimus.exiguus.male.-.tanikawa.jpg|right|Male A. exiguus Anelosimus_nelsoni_301761065_543794144.jpg|Female A. nelsoni Anelosimus vittatus 1.jpg|right|A. vittatus , this genus includes 75 species: • Anelosimus agnar Agnarsson, 2006 – MalaysiaAnelosimus amelie Agnarsson, 2009 – Comoros, MayotteAnelosimus analyticus (Chamberlin, 1924) – United States, MexicoAnelosimus andasibe Agnarsson & Kuntner, 2005 – MadagascarAnelosimus arizona Agnarsson, 2006 – United States, Mexico • Anelosimus ata Agnarsson, Kuntner & Jencik, 2015 – Madagascar • Anelosimus baeza Agnarsson, 2006 – Mexico to Brazil • Anelosimus bali Agnarsson, 2012 – Bali • Anelosimus biglebowski Agnarsson, 2006 – TanzaniaAnelosimus buffoni Agnarsson, Kuntner & Jencik, 2015 – Madagascar • Anelosimus chickeringi Levi, 1956 – Mexico to Peru • Anelosimus chonganicus Zhu, 1998 – ChinaAnelosimus crassipes (Bösenberg & Strand, 1906) – China, Korea, JapanAnelosimus darwini Agnarsson, Kuntner & Jencik, 2015 – Madagascar • Anelosimus decaryi (Fage, 1930) – Seychelles (Aldabra), Madagascar, Comoros, Mayotte • Anelosimus dialeucon (Simon, 1890) – YemenAnelosimus dianiphus (Rainbow, 1916) – Australia (Queensland) • Anelosimus domingo Levi, 1963 – Colombia to Suriname and Peru • Anelosimus dubiosus (Keyserling, 1891) – BrazilAnelosimus dubius (Tullgren, 1910) – Tanzania • Anelosimus dude Agnarsson, 2006 – Tanzania • Anelosimus eidur Agnarsson, 2012 – New GuineaAnelosimus elegans Agnarsson, 2006 – Mexico to Peru • Anelosimus ethicus (Keyserling, 1884) – Brazil • Anelosimus exiguus Yoshida, 1986 – China, Japan, Ryukyu Is. • Anelosimus eximius (Keyserling, 1884) – Lesser Antilles, Panama to Argentina (type species) • Anelosimus fraternus Bryant, 1948 – HispaniolaAnelosimus guacamayos Agnarsson, 2006 – EcuadorAnelosimus hookeri Agnarsson, Kuntner & Jencik, 2015 – Madagascar • Anelosimus huxleyi Agnarsson, Veve & Kuntner, 2015 – Madagascar • Anelosimus inhandava Agnarsson, 2005 – Brazil, ArgentinaAnelosimus iwawakiensis Yoshida, 1986 – Korea, Japan • Anelosimus jabaquara Levi, 1956 – Brazil • Anelosimus jucundus (O. Pickard-Cambridge, 1896) – Mexico to Argentina • Anelosimus kohi Yoshida, 1993 – Malaysia, SingaporeAnelosimus lamarcki Agnarsson & Goh, 2015 – Madagascar • Anelosimus linda Agnarsson, 2006 – Malaysia • Anelosimus lorenzo Fowler & Levi, 1979 – Brazil, Paraguay, Uruguay, Argentina • Anelosimus luckyi Agnarsson, 2012 – New Guinea • Anelosimus may Agnarsson, 2005 – Madagascar • Anelosimus membranaceus Zhang, Liu & Zhang, 2011 – China (Hainan) • Anelosimus misiones Agnarsson, 2005 – Argentina • Anelosimus monskenyensis Agnarsson, 2006 – KenyaAnelosimus moramora Agnarsson, Kuntner & Jencik, 2015 – Madagascar • Anelosimus nazariani Agnarsson & Kuntner, 2005 – Madagascar • Anelosimus nelsoni Agnarsson, 2006 – South AfricaAnelosimus nigrescens (Keyserling, 1884) – Guyana, Brazil • Anelosimus octavius Agnarsson, 2006 – Mexico to Costa Rica • Anelosimus oritoyacu Agnarsson, 2006 – Mexico to Ecuador • Anelosimus pacificus Levi, 1956 – Mexico to Costa Rica, JamaicaAnelosimus pantanal Agnarsson, 2006 – Brazil • Anelosimus placens (Blackwall, 1877) – Seychelles • Anelosimus pomio Agnarsson, 2012 – Papua New Guinea (New Britain) • Anelosimus potmosbi Agnarsson, 2012 – New Guinea • Anelosimus pratchetti Agnarsson, 2012 – Australia (New South Wales) • Anelosimus pulchellus (Walckenaer, 1802) – Europe, Caucasus, Iran, North Africa • Anelosimus puravida Agnarsson, 2006 – Guatemala to Panama • Anelosimus rabus Levi, 1963 – Brazil • Anelosimus rupununi Levi, 1956 – Trinidad to Brazil • Anelosimus sallee Agnarsson & Kuntner, 2005 – Madagascar • Anelosimus salut Agnarsson & Kuntner, 2005 – Madagascar • Anelosimus seximaculatus (Zhu, 1998) – China (Hainan) • Anelosimus studiosus (Hentz, 1850) – USA to Argentina • Anelosimus subcrassipes Zhang, Liu & Zhang, 2011 – China (Hainan) • Anelosimus sulawesi Agnarsson, 2006 – Indonesia (Sulawesi) • Anelosimus sumisolena Agnarsson, 2005 – Brazil • Anelosimus taiwanicus Yoshida, 1986 – Taiwan, Indonesia (Krakatau) • Anelosimus terraincognita Agnarsson, 2012 – possibly Australasia • Anelosimus tita Agnarsson, Kuntner & Jencik, 2015 – Madagascar • Anelosimus torfi Agnarsson, 2015 – Madagascar • Anelosimus tosus (Chamberlin, 1916) – Mexico to Peru • Anelosimus vierae Agnarsson, 2012 – Uruguay, Argentina • Anelosimus vittatus (C. L. Koch, 1836) – Europe, Turkey, Caucasus, Iran • Anelosimus vondrona Agnarsson & Kuntner, 2005 – Madagascar • Anelosimus wallacei Agnarsson, Veve & Kuntner, 2015 – Madagascar ==References==
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