Macroglossum ungues Rothschild & Jordan, 1903, Novit. zool. 9 (suppl.): 622 (key), 624 (key), 643. Type locality: [Indonesia:] Buru, <<Kayeli>>.
Nearly identical in pattern to Macroglossum sitiene, but smaller; forewing more obtuse, the outer margin more convex; male antenna comparatively longer and stouter. Forewing upperside first discal line more curved than in Macroglossum sitiene, nearer the antemedian band in the middle; subapical spot in cell Rs3 more prominent. Hindwing upperside more yellow-washed basally than in Macroglossum sitiene.
In the male genitalia, harpe longer than in Macroglossum sitiene. Aedeagus with 2 processes: the dorsal much longer than in Macroglossum sitiene; the ventral shorter, dentate.
Larval hostplants. Unknown.
Indonesia, from Java to Ambon, and also the Philippines. The record from China is suspect.