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Formicinae

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Formicinae

 1a. Antennae nine-segmentedBrachymyrmex depilis
 1b.Antennae twelve-segmented2
   
 2a. Thorax smooth, convex profileCamponotus
 2b. Thorax not a smotth, convex profile3
   
 3a. Maxillary palps short, 3-segmentedLasius subgenus Acanthomyops
 3b. Maxillary palps longer, 6-segmented4
   
 4a. Frontal carinae prominent, ocelli distinct, largeFormica
 4b. Frontal carinae small or indistinct, ocelli vage, small5
   
 5a.Antennal scapes surpassing occipital margin by at least 1/3 length, usually longer; erect hairs on body long and brown or blackPrenolepis imparis
 5b. Antennal scapes shorter; erect body hairs short and golden; small (generally < 0.5 cm), yellow or brownish; mesonotum pyramidal in profileLasius