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ALL ABOUT BUTTERFLIES!
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|Butterfly Life Cycle|
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The pupa is the stage in a butterfly's (or moth's) life when it is encased in a chrysalis and undergoing metamorphosis. It does not eat during this stage.
The pupa stage lasts from a few days to many months (some butterflies overwinter in the pupa stage, and the adult emerges in the spring).
The pupa of a butterfly is called a chrysalis (derived from the Greek word for gold). The chrysalis of many butterflies (like the Nymphalidae and Satyridae families) are suspended from a silk pad and abdominal hooks. Others (like like swallowtails and sulphurs) also have a silk girdle supporting their mid-section. About a day before the adult butterfly emerges, the chrysalis of many species (including the monarch) becomes transparent.
Some moths spin a silk cocoon which protects the pupa. Some moth larva tunnel into the ground up to several inches where it will pupate.
A cremaster is a support hook (or a cluster of small hooks) at the abdominal (hind) end of a pupa.
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