The scape, labrum, mandibles and palpi ferruginous; the clypeus widely emarginate anteriorly. [Please select]
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Orange-red; the anterior margin of the clypeus entire; the labrum produced, its anterior margin widely emarginate; eyes large, black and ovate. [Please select]
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Face view of the head, showing the simple and compound eyes, the antennæ, labrum, and palps. [Please select]
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The labrum, or upper lip, is separated by a deep suture from the clypeus, and is trapezoidal in form. [Please select]
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_--Labrum generally considerably bullate in the upper part, with a row of teeth on the crest. [Please select]
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_--Labrum highly bullate in the upper part, with large, inwardly pointed, unequal teeth. [Please select]
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