| Head of major worker is circular in cross section and abruptly truncated | |||
| Head of major worker is not circular and not abruptly truncated | |||
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Number of segments between alitrunk and gaster (Only 1 segment (the petiole) is reduced or isolated between the alitrunk and gaster) Acidipore (Tip of gaster with acidipore, usually projecting as nozzle with fringe of hairs; sting absent) Number of antennal segments (12 antennal segments) Maxillary palp (Maxillary palp segments 3 and 4 not longer than head) Setae (Dorsal surfaces without coarse, paired hairs) Position of antenna (Antenna well behind posterior margin of clypeus; frontal lobes extended; alitrunk without step)
| Identity - What this specimen is (based on the available information). |
| Diagnostic - How to further narrow the specimen's identity. Select the most appropriate option. |