. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. BROWN : ANT TRIBE AMBLYOPONINI 157 aculeate lIyineiioi)tei-a, and probably included, sometime during the Cretaceous, the ancestral stem of the Formieidae. The sting in worker and female AmWyopone is long", sharp, heavily sclero- tized and obviously functional. In the female and worker Amhlyopone there is a fundamental uniformity in the structure of the head and mandibles despite the great interspecific differences one finds in detail. The man- dibles always end in an acute (usually dentiform or spiniform) apex, a
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. BROWN : ANT TRIBE AMBLYOPONINI 157 aculeate lIyineiioi)tei-a, and probably included, sometime during the Cretaceous, the ancestral stem of the Formieidae. The sting in worker and female AmWyopone is long", sharp, heavily sclero- tized and obviously functional. In the female and worker Amhlyopone there is a fundamental uniformity in the structure of the head and mandibles despite the great interspecific differences one finds in detail. The man- dibles always end in an acute (usually dentiform or spiniform) apex, and the eyes, when present, are situated behind the middle. Heads of amblyoponine workers, full-face view. Figure 3. Amhlyopone sp. of rcdinata group from Macao. Figure 4. Mystrium camillae from near Darwin, northern Australia. of the sides of the head. The clypeus forms a band across the anterior part of the head, and its median portion is usually more or less projecting to form a low, broad lobe or apron, which in most but not all species bears a row of denticles or small tubercles. The mandibles are linear (rarely triangular) and inserted far apart at the corners of the clypeus; when at rest, their apical portions cross over one another. In most species, the basal border. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
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