. Annual report of the Agricultural Experiment Station. Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). 17^ Home Nature-Study The life-history of butterflies consists of four stages: First.— The eggs which are laid upon the food plant by the mother butterfly; these eggs are often exquisite in color and beautifully ribbed and pitted so that when seen through the micro- scope they look like gems. Second.— The cat- erpillars which hatch from these eggs and which feed upon the food plant until fully developed. Before reaching their full growth, the ca
. Annual report of the Agricultural Experiment Station. Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). 17^ Home Nature-Study The life-history of butterflies consists of four stages: First.— The eggs which are laid upon the food plant by the mother butterfly; these eggs are often exquisite in color and beautifully ribbed and pitted so that when seen through the micro- scope they look like gems. Second.— The cat- erpillars which hatch from these eggs and which feed upon the food plant until fully developed. Before reaching their full growth, the caterpil- lars shed their skeleton-skin four or five times; often this change of skin makes a change in the appearance and in the color of the caterpillar. Third.— The pupa state or chrysalis. When the caterpillar is full grown it sheds its old skin and appears in a very different form, that of the chrpsalis or pupa. The pup?e of the butterflies are never pro- tected by a cocoon as are the pupse of moths. This is one of the chief differences between moths and butterflies. The caterpillar, before it changes to a pupa, makes a button of silk and sometimes also a loop of silk by which the pupa is suspended. As the insect when in the pupa or chrysalis state is helpless and unable to move, it is, therefore, an easy prey to birds and other enemies; thus the chrysalis is usually inconspicuous and placed in some position where it is not easily detected by even the keenest eyes. Fourth.—After a time the pupa skin is shed and from this comes the winged insect in all its beauty of color and form. Caterpillar of black swallowtail in two stages of growth The larger one has the scent organs protruding. HOW TO STUDY THE BUTTERFLIES There are three ways to study butterflies: First.— The caterpillars may be found on their food plant and reared indoors. This requires a great deal of care in providing fresh food and in looking after the wants of the little prisoners. This is the best way
Size: 1847px × 1353px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., book, bookcentury1800, bookcollectionbiodiversity, bookdecade1880
