Chrysalis Pupa

common crow butterfly (euploea core) chrysalis illustrating greek origin of term: χρυσός (chrysós) gold

a chrysalis (latin chrysallis, greek χρυσαλλίς = chrysallís, plural: chrysalides, known aurelia) or nympha pupal stage of butterflies. term derived metallic gold-coloration found in pupae of many butterflies, referred greek term χρυσός (chrysós) gold.

when caterpillar grown, makes button of silk uses fasten body leaf or twig. caterpillar s skin comes off final time. under old skin hard skin called chrysalis.

because chrysalises showy , formed in open, familiar examples of pupae. chrysalides attached surface velcro-like arrangement of silken pad spun caterpillar, cemented underside of perch, , cremastral hook or hooks protruding rear of chrysalis or cremaster @ tip of pupal abdomen caterpillar fixes pad of silk. (gr. kremastos suspended )

like other types of pupae, chrysalis stage in butterflies 1 in there little movement. however, butterfly pupae capable of moving abdominal segments produce sounds or scare away potential predators. within chrysalis, growth , differentiation occur. adult butterfly emerges (ecloses) , expands wings pumping haemolymph wing veins. although sudden , rapid change pupa imago called metamorphosis, metamorphosis whole series of changes insect undergoes egg adult.

when emerging, butterfly uses liquid, called cocoonase, softens shell of chrysalis. additionally, uses 2 sharp claws located on thick joints @ base of forewings make way out. having emerged chrysalis, butterfly sit on empty shell in order expand , harden wings. however, if chrysalis near ground (such if fell off silk pad), butterfly find vertical surface rest upon , harden wings (such wall or fence).

moth pupae dark in color , either formed in underground cells, loose in soil, or pupa contained in protective silk case called cocoon. pupa of species such hornet moth develop sharp ridges around outside called adminicula allow pupa move place of concealment inside tree trunk when time adult emerge.

it important differentiate between pupa, chrysalis , cocoon. pupa stage between larva , adult stages. chrysalis refers butterfly pupa although term may misleading there moths pupae resembles chrysalis, e.g.: plume winged moths of family pterophoridae , geometrid moths. cocoon silk case moths, , other insects, spin around pupa.