Baiyuerius yuelu sp. nov., male holotype (A, E–G) and female paratype (B–D) A мale habitus, dorsal view B female habitus, dorsal view C epigyne, ventral view D same, dorsal view (dash-line indicating the outline of fertilization ducts) E left male pedipalp, prolateral view F same, ventral view G same, retrolateral view. Arrows show the hypophysis of cymbium. Abbreviations: A = atrium; C = conductor; CD = copulatory duct; CDA = dorsal apophysis of conductor; CF = cymbial furrow; CO = copulatory opening; FD = fertilization duct; E = embolus; EB = embolic base; H = hood; LTA = lateral tibial apophysis; MA = median apophysis; PA = patellar apophysis; PES = posterior epigynal sclerite; RTA = retrolateral tibial apophysis; S = spermatheca; SE = swell of epigyne; ST = subtegulum; T = tegulum.