About Eligma narcissus (Cramer, 1775)
The head and thorax of Eligma narcissus are greyish brown, marked with black spots. The abdomen is bright yellow, with a series of black spots running along its dorsal and lateral sides. Forelegs are greyish brown and spotted with black. Midlegs and hindlegs are yellowish, with black spots located on the tibia, while the tarsi are greyish brown. Forewings are overall greyish brown, with the costal area carrying an olive tinge. An irregular, diffused, curved white fascia extends from the wing base to the apex. There are several basal and sub-basal black spots. A wavy black line runs from the lower angle of the cell to the inner margin. A submarginal series of black spots is present; spots toward the outer angle are conjoined into streaks. Hindwings are bright yellow. The apical area of the hindwings is black, suffused or streaked with dark blue, and ends at vein 1b. The tips of the cilia are whitish. In terms of ecology, the larvae of Eligma narcissus feed on Canarium and Ailanthus species, including Ailanthus fordii. They have also been recorded feeding on Ailanthus altissima, Amygdalus persica, and Toona sinensis found in China.
