| Scape strongly swollen at its base, forming a rounded lobe at the proximal zone of the scape. Colour black. Whole body dull. Propodeum angulose, sometimes forming spines. Monomorphic |
Scape cylindrical, getting thinner to the base. If a lobe exists (Group structor), this is conspicuous and starts at the base of the scape, continuing the scape profile in a more or less triangular lobe. Monomorphic or polimorphic. Propodeum with various shapes |
