The Spodoptera littoralis moth, or African cotton leafworm, lays 20-1,000 white to yellowish eggs on the bottom side of a plant's leaves and then coats them with scales from its abdomen, once the eggs hatch and the moths grow into adults, they live about five to ten days.
Spodoptera littoralis, also referred to as the African cotton leafworm or Egyptian cotton leafworm or Mediterranean brocade, is a species of moth in the family Noctuidae. Female moths lay a batch of eggs that ranges from 201,000 eggs on the lower side of a host plant's leaves. These white-yellow color of the eggs turn black just before hatching due to the presence of black larval head near the transparent shell. After the eggs are laid, female coats the eggs with scales from its abdomen. The newly hatched larvae up to third-instar mainly feed on the lower side of the leaves but the later instar larvae feed on both sides. The adult moth appears at night and live about 510 days. 
