Abstract
A novel glandular structure is described within the metatibia in ants of the poneroid group. This metatibial gland has been considered a major synapomorphic character of the subfamilies belonging to the doryline section. Histological investigations combined with scanning electron micrograph studies revealed a remarkably complex gland, consisting of a glandular epithelium and a cuticular pore plate, the morphology of which varies considerably between the species. This gland is also present in species of the generaDiacamma andPachycondyla (Ponerini). Based on the morphology of glandular epithelia and pore plates, it is not possible to decide whether this structure is homologous or analogous to that of the doryline section subfamilies. In workers of certain species of the genusDiacamma, the secretions of this gland are involved in sexual calling behavior.
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