A new species of Sibianor Logunov, 2001 (Arachnida: Aranei: Salticidae) from the Caucasus

A new species of spiders Sibianor caucasicus sp. n. from the Republic of North Ossetia–Alania, Russia (Sunzhenskiy and Zmeyskiy Mt. ranges; elevations 426–1850 m a.s.l.) is diagnosed, illustrated and described based on males and females. The new species is most similar to Sibianor tantulus (Simon, 1868) and S. aemulus (Gertsch, 1934), but can be distinguished from both by the notably shorter embolus (barely extending beyond the apical end of the tegulum) in the males, and the presence of a distinctive 90-degree bend of insemination ducts (but no first loop) in the females. The distribution of species of the genus in the Caucasus is discussed.