Abstract
A total of ten spiders of the genus Cybaeus (Araneae; Cybaeidae) are described from the central part of Honshu, Japan, as new: Cybaeus enshu (southwestern part of Shizuoka Pref. and vicinities), C. kiiensis (Kii Peninsula), C. minoensis (western part of Gifu Pref. and vicinities), C. biwaensis (areas adjacent to northern part of Lake Biwa), C. echigo (northernmost part of Nagano Pref., Niigata and Fukushima Pref.), C. aizuensis (Fukushima and Niigata Pref.), C. gassan (Yamagata Pref.), C. asahi (Mt. Asahi in Yamagata Pref.), C. melanoparvus (Fukui, Gifu, and Nagano Pref.), and C. monticolus (southern mountainous area of Chubu District). Each of the species seems to occupy a relatively small local area as shown in the parentheses above, though some of those distributional ranges largely or partially overlap one another.
