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The earliest known butterfly fossils are from the mid Eocene epoch, between 40-50 million years ago. [ 1 ] [ dubious – discuss ] Their development is closely linked to the evolution of flowering plants, since both adult butterflies and caterpillars feed on flowering plants.
Life cycle of the monarch butterfly. Butterflies in their adult stage can live from a week to nearly a year depending on the species. Many species have long larval life stages while others can remain dormant in their pupal or egg stages and thereby survive winters. [36] The Melissa Arctic (Oeneis melissa) overwinters twice as a caterpillar. [37]
Since then the metamorphoses of the caterpillar into a butterfly has in Western societies been associated with countless human transformations in folktales and literature. There is no process in the physical life of human beings that resembles this metamorphoses, and the symbol of the caterpillar tends to depict a psychic transformation of a human.
It wasn't long ago that Caterpillar (NYS: CAT) , the world's biggest manufacturer of equipment used in heavy construction and other related tasks, was being rocked by the wobbly global economy.
Large blue caterpillars grow to about half an inch (13 millimetres) in length, and spend up to 9 months before they undergo metamorphosis to a chrysalis to become a butterfly. Large blue butterflies are one of the largest in the family Lycaenidae , known as the gossamer-winged butterfly, with a wingspan of up to 2 inches (51 millimetres), and ...
After the caterpillar becomes a butterfly, the toxins shift to different body parts. Since many birds attack the butterfly's wings, having three times the cardiac glycosides in the wings leaves predators with a foul taste and may prevent them from ever ingesting the butterfly's body. [ 128 ]
In cold climates, the lime butterfly is known to pass the winter as pupae. [12] Typically, the butterfly undergoes five instars as a caterpillar. [12] The female butterfly goes from plant to plant, laying a single egg at a time on top of a leaf, which it holds onto with its legs, and flies off as soon as the egg is laid.
Papilio polyxenes, the (eastern) black swallowtail, American swallowtail or parsnip swallowtail, [4] is a butterfly found throughout much of North America. An extremely similar-appearing species, Papilio joanae, occurs in the Ozark Mountains region, but it appears to be closely related to Papilio machaon, rather than P. polyxenes.
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