Description of a new species of the ant genus Ooceraea Roger, 1862 (Hymenoptera: Formicidae; Dorylinae) from the Vietnam’s Central Highlands

Ooceraea quadridentata sp. nov. is described based on a colony series collected from a disturbed and bamboo-mixed evergreen forest in Vietnam’s Central Highlands (Nam Kar Nature Reserve, Dak Lak Province). This new species is distinguished from other described congeners by its propodeum with two pairs of conspicuous denticles. This represents the second species of the genus Ooceraea from the Indo-Chinese Peninsula. A preliminary key to Oriental species of Ooceraea based on the worker caste is also provided.