Cybaeus is a genus of araneomorph spiders in the family Cybaeidae, first described by Ludwig Carl Christian Koch in 1868. It is found in America, Europe, Japan, Korea and China. Females of different species are difficult to distinguish, especially in North America. Images of males that include pedipalps are the easiest to determine species. Species it contains 198 species: Cybaeus abchasicus Charitonov, 1947 — Turkey, Caucasus (Russia, Georgia) Cybaeus adenes Chamberlin & Ivie, 1932 — USA Cybaeus aikana Ihara, Koike & Nakano, 2021 — Japan (Ryukyu Is.) Cybaeus aizuensis Kobayashi, 2006 — Japan Cybaeus akaanaensis Ihara, 1968) — Japan Cybaeus akiensis Ihara, 2003 — Japan Cybaeus amamiensis Ihara, Koike & Nakano, 2021 — Japan (Ryukyu Is.) Cybaeus amicus Chamberlin & Ivie, 1932 — USA Cybaeus anaiwaensis Ihara, 1968) — Japan Cybaeus angustiarum L. Koch, 1868 — Europe Cybaeus aokii Yaginuma, 1972 — Japan Cybaeus aquilonalis Yaginuma, 1958 — China, Japan Cybaeus aratrum Kim & Kim, 2008 — Korea Cybaeus asahi Kobayashi, 2006 — Japan Cybaeus ashikitaensis Ihara, 1968) — Japan Cybaeus aspenicolens Chamberlin & Ivie, 1932 — USA Cybaeus auburn Bennett, 2019 — USA Cybaeus auriculatus Seo, 2017 — Korea Cybaeus balkanus Deltshev, 1997 — Bulgaria, Serbia, North Macedonia Cybaeus bam Marusik & Logunov, 1991 — Russia (Kurile Is.) Cybaeus basarukini Marusik & Logunov, 1991 — Russia (Sakhalin) Cybaeus bilectus Bennett, 2021 — USA Cybaeus bitchuensis Ihara & Nojima, 2005 — Japan Cybaeus biwaensis Kobayashi, 2006 — Japan Cybaeus blasbes Chamberlin & Ivie, 1932 — USA Cybaeus brignolii Maurer, 1992 — Turkey Cybaeus broni Caporiacco, 1934 — Karakorum Cybaeus bryoncavus Bennett, 2021 — USA Cybaeus bulbosus Exline, 1935 — USA Cybaeus cascadius Roth, 1952 — USA Cybaeus charlesi Bennett, 2016 — USA, Canada Cybaeus chauliodous Bennett, 2009 — USA Cybaeus communis Yaginuma, 1972 — Japan Cybaeus confrantis Oliger, 1994 — Russia (Far East) Cybaeus conservans Chamberlin & Ivie, 1932 — USA Cybaeus consocius Chamberlin & Ivie, 1932 — USA Cybaeus constrictus Chamberlin & Ivie, 1942 — USA Cybaeus coylei Bennett, 2021 — USA Cybaeus cribelloides Chamberlin & Ivie, 1932 — USA Cybaeus culter Lee, Yoo & Kim, 2021 — Korea Cybaeus cylisteus Zhu & Wang, 1992 — China Cybaeus daimonji Matsuda, Ihara & Nakano, 2020 — Japan Cybaeus daisen Ihara & Nojima, 2005 — Japan Cybaeus deletroneus Zhu & Wang, 1992 — China Cybaeus desmaeus Zhu & Wang, 1992 — China Cybaeus devius Chamberlin & Ivie, 1942 — USA Cybaeus