| 1. | Their triangular scutellum is shorter than a pronotum without prominent tubercles.
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| 2. | Pronotum and elytra are punctuated and covered of black erect hairs.
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| 3. | A pronotum similar to " Hadrobregmus " is characteristic.
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| 4. | Posterior angles of pronotum drawn out into long, brownish tongue.
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| 5. | The subspecies are black coloured with either golden or bronze pronotum.
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| 6. | The pronotum has a lateral margin without a lateral bead.
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| 7. | Males have appendages resembling horns on the pronotum and on the head.
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| 8. | Often, the head is concealed under the hood-like pronotum.
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| 9. | Many genera have the lateral margins of the pronotum dentate or denticulate.
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| 10. | Pronotum is strongly sclerotized while meso-and metantoum are weakly sclerotized.
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