Leptanilla genus
Leptanilla are among the world's smallest ants (1-2 mm). Blind and subterranean, they feed on hemolymph of centipede larvae. Larvae feed the queen through a specialized organ. Japan, Mediterranean.
L. oceanica
In dorsal view, first gastral tergite not narrowed anteriorly
Anterior margin of clypeus straight, not projecting
Japan
L. kubotai
In dorsal view, first gastral tergite clearly narrowed anteriorly
PPE posterior border rounded in dorsal view, posterolateral corners rounded
PE projecting well ventrally in its posterior part
PE ventral spine less developed and pointing horizontally to the thorax
Japan