| 21. | The small pectoral fins are falcate ( sickle-shaped ) with relatively pointed tips.
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| 22. | The forewings are falcate in both sexes.
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| 23. | The adult leaves are alternate with lanceolate to falcate blades that are long and wide.
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| 24. | Like one of many species of birds, the falcated duck migrates through the Atlantic Ocean.
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| 25. | The long, falcate ( sickle-shaped ) pectoral fins taper to narrowly pointed tips.
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| 26. | The pectoral fins are moderately short, narrow, and falcate ( sickle-shaped ).
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| 27. | The long and narrow pectoral fins are falcate ( sickle-shaped ) with pointed tips.
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| 28. | The forewings are relatively short and the outer margin is straight and the apex slightly falcate.
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| 29. | The forewing is more slender and slightly more falcate than " Xylophanes crotonis ".
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| 30. | The pectoral fins are large and narrowly falcate ( sickle-shaped ), tapering to points.
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