Previous Step (80b)
81a Subgenital plate of male conical without a preapical tubercle. Tegmina short, subequal in length to pronotum suddenly narrowed at apex into a blunt tooth; rarely macropterous.
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81b Subgenital plate of male with a large preapical tubercle. Tegmina longer, usually reaching or nearly reaching apex of abdomen. go to 82
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