The larva has to turn into a chrysalis when it matures, and the larva usually secures itself with a few filaments in a hidden place on the back of a plant leaf, after which it pupates directly without a cocoon.

When the chrysalis matures, it breaks its shell and burrows out of the chrysalis, but it takes a certain amount of time for the wings to dry out and harden, and at this point the butterfly can't hide from its natural predators, and it is a dangerous period.

After the wings are stretched out, the butterfly can fly, the front and back wings of the butterfly are not synchronized flapping, so the butterfly fluctuates a lot when it flies, the posture is beautiful, the so-called "fluttering", from the butterfly's flight. Generally, adult butterflies die before winter after mating and laying eggs, but some species migrate to the south for the winter.

Expanded Information

Caterpillar Physical Characteristics: Lepidoptera is the most common order of insects. Beautiful colors, adult limbs and wings covered with scales and hairs, so 2 pairs of wings are scaly, and the forewings are larger than the hindwings; siphon mouthparts (primitive small-winged moths with well-developed palate, chewing); antennae filamentous, bipartite, pectinate, clavate, and other multi-types.

Developed compound eyes, 2 single eyes or no single eye. The larvae, also called caterpillars, are wormlike, with three pairs of thoracic legs, and mostly five pairs of gastropods and caudipods. The larval body is covered with setae, and the arrangement of the setae and the name of the order of the setae are important in classification. There are about 112,000 species, including moths and butterflies. Some can be used as bait and fed to fish.

Baidu Encyclopedia - Butterfly

Baidu Encyclopedia - Caterpillar