The Ants (Hymenoptera: Formicidae) of Bol'shaya Svetlovodnaya (Late Eocene of Sikhote-Alin, Russian Far East) Муравьи (Hymenoptera: Formicidae) Большой Светловодной (поздний эоцен, Сихотэ-Алинь, Дальний Восток, Россия)

The ant fossils of the Bol'shaya Svetlovodnaya (Late Eocene of Sikhote-Alin, Russian Far East) are studied. A total of 80 specimens are identified as Formicidae. The location is quite diverse in composition of ant: described 15 genera and 9 subfamilies. A generic level comparison reveals Svetlovodnaya ants as more similar to European rather than North American ant fauna. Unusually high proportion Myrmicinae (21.4%) for the known deposits of Europe, where these ants become abundant only in the Miocene. A distinctive feature of the Svetlovodnaya ant assemblage under comparison with the European and North American ones is the lack of highly dominanting species. Presences of strictly tropical and temperate taxa support the equable climate concept as applicable to the Late Eocene climate of the Sikhote-Alin area. New genera and species are described from the Bol'shaya Svetlovodnaya: Aneuretinae - Paraneuretus dubovikoffi sp. n., Dolichoderinae - Dolichoderus