| 1 | Pronotum shape | Completely convex | Only disc convex | Completely convex |
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| 2 | Wrinkles on the pronotum | Reaching the lateral margin | Not reaching the lateral margin | Reaching the lateral margin |
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| 3 | Elytral triangle | Short | Long | Long |
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| 4 | Elytral triangle | With small pubescent patches | Glabrous or scarse pubescent patches | With small pubescent patches |
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| 5 | Pubescent striae on the elytra | Thin | Thin | Thick |
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| 6 | Pubescent striae on the elytra | Long | Short | Long |
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| 7 | Striae 5, 6 and 7 on the elytra | from ~1/3 elytral | from ~2/3 elytral | from ~1/2 elytral |
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| 8 | Granulations on each stria on the elytra | Single raw on the midline | Single raw on the midline | Multiples and not in raw |
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| 9 | Granulations on each stria on the elytra | Strong | Weak | Strong |
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| 10 | Inter-striation spaces | As wide as the striae | As wide as the striae | 3x thinner |
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| 11 | Aedeagus | Short | Long | Long |
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| 12 | Aedeagus, base of the ls | 3x wider than the apex | 2x wider than the apex | 4x wider than the apex |
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| 13 | Aedeagus, apex of the aedeagus | Abundant long setae | Scarce short setae | Scarce short setae |
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| 14 | Aedeagus, basal lamina of tegmen | 1.7x longer than ls | 1.3x longer than ls | 1.5x longer than ls |
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| 15 | Ovipositor, v+c2 | Subsquare | Rounded | Rounded |
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| 16 | Ovipositor, setae on v+c2 | Very abundant | Abundant | Very abundant |
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| 17 | Ovipositor, c4 | Thin and pointed | Robust and blunt tip | Thin and pointed |
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