frontal lobes
frontal lobes short, broad, rounded
frontal lobes short, broad, rounded 
The frontal lobes are short and broad, and are distinctly rounded anteriorly. Used in Antkey to separate Myrmica specioides from Myrmica rubra.
frontal lobes obscure face
frontal lobes obscure face
The frontal lobes are extremely broad. They extend laterally to obscure the margin of the face between the eye and the mandible. Used in Antkey to separate Cephalotes and Cyphomyrmex from other myrmicine genera.
frontal lobes do not obscure face margins
frontal lobes do not obscure face margins
The frontal lobes variously shaped, but never so broad as to obscure the margin of the face between the eye and the mandible. Used in Antkey to separate all other myrmicine genera from Cephalotes and Cyphomyrmex.
frontal lobes close together
frontal lobes close together
The frontal lobes relatively close together so that the posteromedian portion of the clypeus, where it projects between the frontal lobes, is at most only slightly broader than one of the lobes.
frontal lobes reduced
frontal lobes reduced
The frontal lobes are very reduced, sometimes to a thin carina. Used in Antkey to separate Amblyoponinae and Cerapachyinae from Ponerinae.
frontal lobes narrow
frontal lobes narrow
The frontal lobes are narrow, distinctly longer than broad and taper anteriorly. Used in Antkey to separate Myrmica rubra from Myrmica specioides.
frontal lobes far apart
frontal lobes far apart
The frontal lobes are relatively far apart so that the posteromedian portion of the clypeus, where it projects between the frontal lobes, is much broader than one of the lobes.
frontal lobes broad
frontal lobes broad
The frontal lobes are relatively broad. Used in Antkey to separate Hypoponera and Ponera from Pachycondyla stigma.
frontal lobes (Ochetellus sororis)
frontal lobes (Ochetellus sororis)
frontal lobes (Ochetellus sororis)
frontal lobes (Plagiolepis alluaudi)
frontal lobes (Plagiolepis alluaudi)
frontal lobes (Plagiolepis alluaudi)