A new species of Cybaeus L. Koch, 1868 (Araneae, Cybaeidae) with simple genitalia from central Japan is the sister species of C. melanoparvus Kobayashi, 2006 with elongated genitalia

Cybaeus melanoparvus Kobayashi, from Mt. Bungen, Shiga Prefecture (KUZ Z3765), male (A–D) and females (E, F). A. Cymbium of left palp, dorsal view; B. Bulb of left palp, ventral view; PCO, proximal arm of conductor; C. Bulb of left palp, prolateral view; EM, embolus; D. Left palp, retrolateral view; PCO, proximal arm of conductor; RTA, retrolateral tibial apophysis; E. Epigyne, ventral view; PME, posterior margin of epigynal plate; F. Spermathecae, dorsal view; BG, Bennett’s gland; FD, fertilization duct; PP, primary pore; SB, spermathecal base; SH, spermathecal head; SS, spermathecal stalk. Scale bars: 500 µm (A–D.); 100 µm (E, F.).