Genus Cybaeus L. Koch 1868

Type species. Amaurobius tetricus C.L. Koch 1839 .

Notes. Bennett (2005, 2017) provided keys to all Nearctic genera then classified in Cybaeidae . See Copley et al. (2009) for genus diagnosis and descriptive details as well as a key to the species groups (females only) of the Holarctic and Californian clades of Cybaeus . Males of Cybaeus species often are difficult to assign to particular species groups. See Bennett et al. (2016, 2019, 2021a, 2021b, 2021c) for, respectively, revisions of the Nearctic species of the Holarctic clade and of the adenes, aspenicolens, consocius, and devius and tardatus groups of the Californian clade.