A new species of the spider genus Gongylidiellum Simon, 1884 from the Caucasus (Aranei: Linyphiidae)

A new species, Gongylidiellum arkhyz sp.n., is described based on a single male from low altitudes on the northern macro slope of the Caucasus Major, Republic of Kabardino-Balkaria, Russia.The species seems to be especially similar to Gongylidiellum caucasicum Tanasevitch et Ponomarev, 2015, known from both sexes from the West Caucasus, Republic of Adygea, Russia.Gongylidiellum arkhyz sp.n.differs well by the shape of the radix, as well as by the smaller and straight embolus.