Danaus chrysippus's Reproduction
The egg of the plain tiger is about 1.7 mm long and 0.5 mm across. When first laid it is white, but gradually turns brown over time. The egg is ridged and dome-shaped. Depending on temperature, the egg is typically hatched in 3–5 days.
The larvae of D. chrysippus proceeds through five instars stages. The first instar is about 4 mm long and its body is white while the head is black. The second instar is about 8 mm long and its body is primarily gray with yellow and black horizontal stripes. This coloration remains for the final three instar stages. The third instar is about 14 mm long, the fourth about 25 mm long, and the fifth about 36 mm long. Depending on temperature, the larval stage can last from 12–20 days.
Before pupation, the caterpillar will become motionless and cease feeding. Its color shifts slightly from gray to brown, and it may lose a small amount of body mass. The prepupal stage lasts 1–3 days depending on temperature. The pupal stage lasts 9–15 days depending on temperature, and the pupa changes color over this period from a pale green to dark brown. Pupae are about 17 mm tall and 8 mm wide.
Male and female D. chrysippus butterflies look very similar and are also similar in size. Adult butterflies typically have a wingspan of 75 mm. The bodies of adult plain tigers are about 23 mm long, and their antennae are about 12 mm long. Depending on temperature, males live about 10–15 days and females live about 7–12 days.