| 1. | The venter has a median ridge aligned with diagonally elongated nodes.
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| 2. | The dermal denticles are widely spaced, with three points and a median ridge.
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| 3. | The dermal denticles are small and overlapping, each bearing a median ridge and three marginal teeth.
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| 4. | The body is densely covered by small, overlapping arrowhead-shaped dermal denticles with a median ridge.
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| 5. | The dermal denticles are small and overlapping, each with three-toothed crown that bears a median ridge.
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| 6. | The body is densely covered by minute dermal denticles, each shaped like an arrowhead and bearing a median ridge.
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| 7. | The dermal denticles are small and overlapping, each with a median ridge and three marginal teeth on the crown.
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| 8. | The cross section may be faintly hexagonal from the effect of a median ridge on either flank, otherwise is tetragonal.
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| 9. | The small dermal denticles have sharp wedge-shaped crowns bearing median ridges, and are placed on stalks ( pedicels ).
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| 10. | The skin is covered by dermal denticles, each with a leaf-shaped crown bearing a median ridge and three marginal teeth.
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