Search Path - How you got here.  Click on the path to backtrack.
  Number of segments between alitrunk and gaster  (Only 1 segment (the petiole) is reduced or isolated between the alitrunk and gaster)     Acidipore  (Acidipore absent)     Sting  (Sting present; pygidium unarmed)     Shape of gaster  (Not as above)     Petiole attachment  (Petiole narrowly attached)     Spiked petiole  (Petiole not spiked; mandibles not as above)     Tibial spur  (Ventral tip of hind tibia with single, large pectinate spur)     Petiole thickness  (Not as above?)     Eye size  (Eyes with more than 4 facets; total body length exceeding 3 mm)

Identity - What this specimen is (based on the available  information).
Family - Formicidae,  Subfamily - Ponerinae,  Genus - Hypoponera,  Species - Hypoponera opaciceps Mayr

Description: Petiole with a subrectangular process; body black to very dark brown; head with coarse punctures, subopaque or opaque; eyes with more than 4 facets; total length exceeding 3 mm

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Hypoponera opaciceps body
(MacKay & MacKay 2003)