About Macroglossum divergens Walker, 1856
This species, Macroglossum divergens Walker, 1856, has a wingspan of 50–60 mm. The head, thorax, and first two abdominal segments are rufous in colour. The third and fourth abdominal segments have lateral yellow bands and paired black dorsal spots. A black dorsal spot is present on the terminal abdominal segment, and the ventral side of the body is reddish. The forewings are greyish brown. The antemedial band is wide and recurved along the inner margin. Two curved, diffused dark postmedial bands are visible, with reddish brown colouring on their inner sides. Subapical markings are indistinct. The hindwings and ventral side of this species are similar to those of Macroglossum sitiene.
There are two main colour forms for the larvae of Macroglossum divergens. In the green form, the head is yellowish green, the basal segment of the antenna is greenish, the remaining antennal segments are red, and the eyes are brownish. In the dark-coloured form, the head is pale brown, and the body is dark smoky olive green or olive brown, dotted with white. A bluish-black dorsal stripe is present on dark-form larvae. The larval horn is reddish in both colour forms. The pupa is pinkish bone-coloured, with the head, thorax, and wing-case tinged with green.
In Hong Kong, this species has several generations per year. Adults can be found on the wing in April, and again from June to December.
