. Elementary lessons on insects . Fig. 48.—An adult yellow fever mosquito (from Howard). The rudiments from which these parts of the fly will all later develop are present within its body, and along with them there is a great store of soft white fat that will furnish the materials out of which, during the pupal period, all these parts will be formed. When the larva is fully fed it leaves the pulp, and burrows into the soil. There its skin shrinks and hardens into a brown capsule-like case, called a pupariurn, (plural puparia) within which the pupa is formed. The pupa is soft and white, and car
. Elementary lessons on insects . Fig. 48.—An adult yellow fever mosquito (from Howard). The rudiments from which these parts of the fly will all later develop are present within its body, and along with them there is a great store of soft white fat that will furnish the materials out of which, during the pupal period, all these parts will be formed. When the larva is fully fed it leaves the pulp, and burrows into the soil. There its skin shrinks and hardens into a brown capsule-like case, called a pupariurn, (plural puparia) within which the pupa is formed. The pupa is soft and white, and carries the legs, wings, antennae, etc., that have suddenly appeared at the last molting. The pupal stage lasts several weeks. Then the adult flies emerge and scatter, and feed and mate and lay eggs. They may live several months. The most Fig. 49.—The larva of this mosquito (from Howard). aKnnrlanr anrl most familiar flies are of this type: the house-fly, for example, whose larvae live in stable manure; also, these pests of our fields and gardens, whose larvae are known as "root
Size: 3734px × 1338px
Photo credit: © The Bookworm Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookcollecti, bookdecade1920, booksubjectinsects
